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OWNER’S MANUAL
F50FFT50GF60CFT60D
6C1-28199-22-E0
EMU25050
Read this owner’s manual carefully before operating your outboard motor.
Important manual information
EMU25101
To the owner
Thank you for choosing a Yamaha outboardmotor. This Owner’s Manual contains infor-mation needed for proper operation, mainte-nance and care. A thorough understandingof these simple instructions will help you ob-tain maximum enjoyment from your newYamaha. If you have any question about theoperation or maintenance of your outboardmotor, please consult a Yamaha dealer.In this Owner’s Manual particularly importantinformation is distinguished in the followingways.
The Safety Alert Symbol meansATTENTION! BECOME ALERT! YOURSAFETY IS INVOLVED!
WARNING
EWM00780
Failure to follow WARNING instructionscould result in severe injury or death tothe machine operator, a bystander, or aperson inspecting or repairing the out-
board motor.
CAUTION:
ECM00700
A CAUTION indicates special precautionsthat must be taken to avoid damage to the
outboard motor.
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
Yamaha continually seeks advancements inproduct design and quality. Therefore, whilethis manual contains the most current prod-uct information available at the time of print-ing, there may be minor discrepanciesbetween your machine and this manual. Ifthere is any question concerning this manu-
al, please consult your Yamaha dealer.To ensure long product life, Yamaha recom-mends that you use the product and performthe specified periodic inspections and main-tenance by correctly following the instruc-tions in the owner’s manual. Note that if youdo not follow these instructions, not only maythe product break down, but the warranty willalso be voided.Some countries have laws or regulations re-stricting users from taking the product out ofthe country where it was purchased, and itmay be impossible to register the product inthe destination country. Additionally, thewarranty may not apply in certain regions.When planning to take the product to anothercountry, consult the dealer where the prod-uct was purchased for further information.If the product was purchased used, pleaseconsult your closest dealer for customer re-registration, and to be eligible for the speci-fied services.
NOTE:
The F50FEHT, F50FET, FT50GET,F60CEHT, F60CET, FT60DET and the stan-dard accessories are used as a base for theexplanations and illustrations in this manual.Therefore some items may not apply to ev-
ery model.
Important manual information
EMU25120
F50F, FT50G, F60C, FT60DOWNER’S MANUAL
©2006 by Yamaha Motor Co., Ltd.1st Edition, April 2006
All rights reserved.Any reprinting or unauthorized usewithout the written permission of
Yamaha Motor Co., Ltd.is expressly prohibited.
Printed in Japan
Table of contents
General information .......................... 1
Identification numbers record.......... 1
Outboard motor serial number .......... 1Key number....................................... 1
C-Tick label ..................................... 1Safety information ........................... 2Important labels............................... 3
Warning labels .................................. 3Caution labels ................................... 3
Fueling instructions ......................... 4
Gasoline............................................ 4Engine oil .......................................... 4
Battery requirement......................... 5
Battery specifications ........................ 5
Propeller selection........................... 5Start-in-gear protection ................... 6
Basic components ............................ 7
Main components............................ 7
Fuel tank ........................................... 8Fuel joint ........................................... 8Fuel tank cap .................................... 8Air vent screw ................................... 9Remote control.................................. 9Remote control lever ......................... 9Neutral interlock trigger ................... 10Neutral throttle lever........................ 10Free accelerator .............................. 10Tiller handle .................................... 11Gear shift lever................................ 11Throttle grip ..................................... 11Throttle indicator ............................. 11Throttle friction adjuster................... 11Engine stop lanyard switch ............. 12Engine stop button .......................... 13Main switch ..................................... 13Steering friction adjuster ................. 14Power trim and tilt switch on remote
control or tiller handle ................... 14Power trim and tilt switch on bottom
engine cowling .............................. 15Variable trolling RPM switches........ 15Trim tab with anode ........................ 16Tilt support lever for power trim and
tilt or hydro tilt model..................... 17Top cowling lock lever(s)
(turn type)......................................17Flushing device ...............................17Water separator ..............................17Warning indicator ............................18Tachometer .....................................18Digital tachometer ...........................18Low oil pressure warning
indicator ........................................19Low oil pressure warning
indicator ........................................19Overheat warning indicator .............19Overheat warning indicator (digital
type) ..............................................20Speedometer (digital type) ..............20Trim meter .......................................21Trim meter (digital type) ..................21Hour meter (digital type)..................21Trip meter ........................................22Clock ...............................................22Fuel gauge ......................................23Fuel warning indicator .....................23Low battery voltage warning
indicator ........................................236Y8 Multifunction meters.................24Tachometer unit ..............................24Speedometer unit ............................26Fuel management meter .................27
Warning system ............................ 27
Overheat warning............................27Low oil pressure warning ................28
Operation ......................................... 31
Installation..................................... 31
Mounting the outboard motor ..........31
Breaking in engine ........................ 32
Procedure for 4-stroke models........32
Preoperation checks ..................... 32
Fuel .................................................32Controls...........................................33Engine .............................................33Checking the engine oil level ..........33
Filling fuel...................................... 33Operating engine .......................... 34
Feeding fuel (portable tank) ............34Starting engine ................................35
Warming up engine....................... 38
Table of contents
Manual start and electric start models .......................................... 38
Shifting .......................................... 38
Forward (tiller handle and remote control models) ............................. 38
Reverse (automatic reverse lock and power trim and tilt models)..... 39
Trolling .......................................... 40
Adjusting trolling speed................... 40
Stopping engine ............................ 40
Procedure ....................................... 40
Trimming outboard motor.............. 41
Adjusting trim angle ........................ 42Adjusting boat trim .......................... 43
Tilting up and down ....................... 43
Procedure for tilting up (power trim and tilt models / power tilt models) ......................................... 44
Procedure for tilting down (power trim and tilt models / power tilt models) ......................................... 45
Cruising in shallow water .............. 46
Power trim and tilt models / power tilt models...................................... 46
Cruising in other conditions........... 48
Maintenance..................................... 49
Specifications ................................ 49Transporting and storing outboard
motor ........................................... 51
Storing outboard motor ................... 51Procedure ....................................... 52Lubrication ...................................... 53Battery care..................................... 53Flushing power unit ......................... 54Cleaning the outboard motor .......... 55Checking painted surface of
motor............................................. 55
Periodic maintenance.................... 55
Replacement parts .......................... 55Maintenance chart .......................... 56Maintenance chart (additional)........ 57Greasing ......................................... 58Cleaning and adjusting spark
plug ............................................... 59Checking fuel system...................... 60
Inspecting idling speed....................61Changing engine oil ........................61Checking wiring and connectors .....63Exhaust leakage..............................63Water leakage .................................63Engine oil leakage...........................63Checking power trim and tilt /
power tilt system ...........................63Checking propeller ..........................64Removing the propeller ...................65Installing the Propeller.....................65Changing gear oil ............................66Cleaning fuel tank ...........................67Inspecting and replacing
anode(s)........................................68Checking battery (for electric start
models) .........................................68Connecting the battery ....................69Disconnecting the battery................70Checking top cowling ......................70Coating the boat bottom..................70
Trouble Recovery............................ 71
Troubleshooting ............................ 71Temporary action in emergency ... 74
Impact damage ...............................74Replacing fuse ................................74Power trim and tilt / power tilt will
not operate....................................75Water separator warning indicator
blinks while cruising ......................75Starter will not operate ....................77Emergency starting engine .............78
Treatment of submerged motor .... 79
Procedure........................................79
1
General information
EMU25170
Identification numbers record
EMU25183
Outboard motor serial number
The outboard motor serial number isstamped on the label attached to the portside of the clamp bracket.Record your outboard motor serial number inthe spaces provided to assist you in orderingspare parts from your Yamaha dealer or forreference in case your outboard motor is sto-len.
EMU25190
Key number
If a main key switch is equipped with the mo-tor, the key identification number is stampedon your key as shown in the illustration.Record this number in the space provided forreference in case you need a new key.
EMU25212
C-Tick label
Engines affixed with this label conform tocertain portion(s) of the Australian RadioCommunications Act.
1. Outboard motor serial number location
1. Key number
1. C-Tick label location
ZMU047011
General information
2
EMU25371
Safety information
�
Before mounting or operating the outboardmotor, read this entire manual. Reading itshould give you an understanding of themotor and its operation.
�
Before operating the boat, read any own-er’s or operator’s manuals supplied with itand all labels. Be sure you understandeach item before operating.
�
Do not overpower the boat with this out-board motor. Overpowering the boat couldresult in loss of control. The rated power ofthe outboard should be equal to or lessthan the rated horsepower capacity of theboat. If the rated horsepower capacity ofthe boat is unknown, consult the dealer orboat manufacturer.
�
Do not modify the outboard. Modificationscould make the motor unfit or unsafe touse.
�
Incorrect propeller selection and incorrectuse may not only cause engine damage,but also adversely affect fuel consumption.Consult your dealer for correct use.
�
Never operate after drinking alcohol or tak-ing drugs. About 50% of all boating fatali-ties involve intoxication.
�
Have an approved personal flotation de-vice (PFD) on board for every occupant. It
is a good idea to wear a PFD wheneverboating. At a minimum, children and non-swimmers should always wear PFDs, andeveryone should wear PFDs when thereare potentially hazardous boating condi-tions.
�
Gasoline is highly flammable, and its va-pors are flammable and explosive. Handleand store gasoline carefully. Make surethere are no gas fumes or leaking fuel be-fore starting the engine.
�
This product emits exhaust gases whichcontain carbon monoxide, a colorless,odorless gas which may cause brain dam-age or death when inhaled. Symptoms in-clude nausea, dizziness, and drowsiness.Keep cockpit and cabin areas well ventilat-ed. Avoid blocking exhaust outlets.
�
Check throttle, shift, and steering for prop-er operation before starting the engine.
�
Attach the engine stop switch lanyard to asecure place on your clothing, or your armor leg while operating. If you accidentallyleave the helm, the lanyard will pull fromthe switch, stopping the engine.
�
Know the marine laws and regulationswhere you will be boating - and obey them.
�
Stay informed about the weather. Checkweather forecasts before boating. Avoidboating in hazardous weather.
�
Tell someone where you are going: leavea Float Plan with a responsible person. Besure to cancel the Float Plan when you re-turn.
�
Use common sense and good judgmentwhen boating. Know your abilities, and besure you understand how your boat han-dles under the different boating conditionsyou may encounter. Operate within yourlimits, and the limits of your boat. Alwaysoperate at safe speeds, and keep a careful
ZMU01697
General information
3
watch for obstacles and other traffic.
�
Always watch carefully for swimmers dur-ing the engine operation.
�
Stay away from swimming areas.
�
When a swimmer is in the water near youshift into neutral and shut off the engine.
�
Do not illegally discard empty containersused to replace or replenish oil. For thecorrect processing of empty containers,consult the dealer where you purchasedthe oil.
�
When replacing oils used to lubricate theproduct (engine or gear oil), be sure towipe away any spilt oil. Never pour oil with-out using a funnel or similar device. If nec-essary, verify the necessary replacementprocedure with the dealer.
�
Never illegally discard (dump) the product.Yamaha recommends consulting the deal-er on discarding the product.
EMU25382
Important labels
EMU25395
Warning labels
EMU25401
Label
WARNING
EWM01260
�
Be sure shift control is in neutral beforestarting engine. (except 2HP)
�
Do not touch or remove electrical partswhen starting or during operation.
�
Keep hands, hair, and clothes awayfrom flywheel and other rotating parts
while engine is running.
EMU25431
Label
WARNING
EWM01300
�
This engine is equipped with a neutralstarting device.
�
The engine will not start unless the shift
control is in neutral position.
EMU25465
Caution labels
ZMU03678
ZMU05261
ZMU04702
General information
4
EMU25473
Label
CAUTION:
ECM01191
Transport and store the engine only asshown. Otherwise, engine damage could
result from leaking oil.
EMU25540
Fueling instructions
WARNING
EWM00010
GASOLINE AND ITS VAPORS ARE HIGH-LY FLAMMABLE AND EXPLOSIVE!
�
Do not smoke when refueling, and keepaway from sparks, flames, or othersources of ignition.
�
Stop engine before refueling.
�
Refuel in a well-ventilated area. Refuelportable fuel tanks off the boat.
�
Take care not to spill gasoline. If gaso-line spills, wipe it up immediately withdry rags.
�
Do not overfill the fuel tank.
�
Tighten the filler cap securely after re-fueling.
�
If you should swallow some gasoline,inhale a lot of gasoline vapor, or getgasoline in your eyes, get immediatemedical attention.
�
If any gasoline spills onto your skin, im-mediately wash with soap and water.Change clothing if gasoline spills on it.
�
Touch the fuel nozzle to the filler open-ing or funnel to help prevent electro-
static sparks.
CAUTION:
ECM00010
Use only new clean gasoline which hasbeen stored in clean containers and is notcontaminated with water or foreign mat-
ter.
EMU29870
Gasoline
If knocking or pinging occurs, use a differentbrand of gasoline or premium unleaded fuel.
EMU25683
Engine oil
NOTE:
If the recommended engine oil grades arenot available, select an alternative from thefollowing chart according to the average
temperatures in your area.
Recommended gasoline:Regular unleaded gasoline with a min-imum octane rating of 90 (Research Octane Number).
Recommended engine oil:4-stroke motor oil with a combination of the following SAE and API oil classi-fications
Engine oil type SAE:10W-30 or 10W-40
Engine oil grade API:SE, SF, SG, SH, SJ, SL
Engine oil quantity (excluding oil filter):2.5 L (2.64 US qt) (2.20 Imp.qt)
General information
5
CAUTION:
ECM01050
All 4-stroke engines are shipped from the
factory without engine oil.
EMU25700
Battery requirement
CAUTION:
ECM01060
Do not use a battery that does not meetthe specified capacity. If a battery whichdoes not meet specifications is used, theelectric system could perform poorly orbe overloaded, causing electric system
damage.
For electric start models, choose a battery
which meets the following specifications.
EMU25720
Battery specifications
NOTE:
The engine cannot be started if battery volt-
age is too low.
EMU25742
Propeller selection
The performance of your outboard motor willbe critically affected by your choice of propel-ler, as an incorrect choice could adverselyaffect performance and could also seriouslydamage the motor. Engine speed dependson the propeller size and boat load. If enginespeed is too high or too low for good engineperformance, this will have an adverse effecton the engine.Yamaha outboard motors are fitted with pro-pellers chosen to perform well over a rangeof applications, but there may be uses wherea propeller with a different pitch would bemore appropriate. For a greater operatingload, a smaller-pitch propeller is more suit-able as it enables the correct engine speedto be maintained. Conversely, a larger-pitchpropeller is more suitable for a smaller oper-ating load.Yamaha dealers stock a range of propellers,and can advise you and install a propeller onyour outboard that is best suited to your ap-plication.
ZMU01710
Minimum cold cranking amps (CCA/EN):430.0 A
Minimum rated capacity (20HR/IEC):70.0 Ah
General information
6
NOTE:
Select a propeller which will allow the engineto reach the middle or upper half of the oper-ating range at full throttle with the maximumboat load. If operating conditions such aslight boat loads then allow the engine r/min torise above the maximum recommendedrange, reduce the throttle setting to maintain
the engine in the proper operating range.
For instructions on propeller removal and in-stallation, see page 64.
EMU25770
Start-in-gear protection
Yamaha outboard motors or Yamaha-ap-proved remote control units are equippedwith start-in-gear protection device(s). Thisfeature permits the engine to be started onlywhen it is in neutral. Always select neutralbefore starting the engine.
1. Propeller diameter in inches2. Propeller pitch in inches3. Type of propeller (propeller mark)
1. Propeller diameter in inches2. Propeller pitch in inches3. Type of propeller (propeller mark)
ZMU04606
-x1 2 3
ZMU04607
-x1 2 3
7
Basic components
EMU25799
Main componentsNOTE:
* May not be exactly as shown; also may not be included as standard equipment on all mod-
els.
F50F, FT50G, F60C, FT60D
2
3
4
TRIP TIME BATT
Km/hknotmph
kmmile
SPEED
YAMAHA
set mode
13
14
1
9
11
6
7
510
8
1215
18
16 17
19 20
21 22
ZMU05107
1. Top cowling2. Water separator3. Top cowling lock lever4. Drain screw5. Anode6. Anti-cavitation plate7. Trim tab (anode)8. Propeller9. Cooling water inlet10. Anode(s)11. Clamp bracket12. Tilt support lever13. Flushing device14. Tiller handle*
15. Remote control box (side mount type)*16. Remote control box (binnacle mount type)*17. Switch panel (for use with binnacle type)*18. Digital tachometer*19. Digital speedometer*20. Tachometer*21. Trim meter*22. Fuel tank
Basic components
8
EMU25802
Fuel tank
If your model was equipped with a portablefuel tank, its function is as follows.
WARNING
EWM00020
The fuel tank supplied with this engine isits dedicated fuel reservoir and must notbe used as a fuel storage container. Com-mercial users should conform to relevantlicensing or approval authority regula-
tions.
EMU25830
Fuel joint
This joint is used to connect the fuel line.
EMU25850
Fuel tank cap
This cap seals the fuel tank. When removed,
1
3
2
ZMU05484
1. Tachometer unit (Square type)*2. Speedometer unit (Square type)*3. Fuel management meter (Square type)*
1. Fuel joint2. Fuel tank cap3. Air vent screw
Basic components
9
the tank can be filled with fuel. To remove thecap, turn it counterclockwise.
EMU25860
Air vent screw
This screw is on the fuel tank cap. To loosenthe screw, turn it counterclockwise.
EMU26180
Remote control
The remote control lever actuates both theshifter and the throttle. The electrical switch-es are mounted on the remote control box.
EMU26190
Remote control lever
Moving the lever forward from the neutral po-sition engages forward gear. Pulling the le-ver back from neutral engages reverse. Theengine will continue to run at idle until the le-ver is moved about 35° (a detent can be felt).Moving the lever farther opens the throttle,and the engine will begin to accelerate.
1. Power trim and tilt switch2. Remote control lever3. Neutral interlock trigger4. Neutral throttle lever5. Main switch / choke switch6. Engine stop lanyard switch7. Throttle friction adjuster
1. Power trim and tilt switch2. Remote control lever3. Free accelerator
2
1
34
ZMU04572
4. Throttle friction adjuster
1. Neutral “ ”
2. Forward “ ”
3. Reverse “ ”4. Shift5. Fully closed6. Throttle7. Fully open
1. Neutral “ ”
2. Forward “ ”
N1F
7
6
2R
34 4
65
7
5
ZMU04573
Basic components
10
EMU26201
Neutral interlock trigger
To shift out of neutral, first pull the neutral in-terlock trigger up.
EMU26211
Neutral throttle lever
To open the throttle without shifting into ei-ther forward or reverse, put the remote con-trol lever in the neutral position and lift theneutral throttle lever.
NOTE:
The neutral throttle lever will operate onlywhen the remote control lever is in neutral.The remote control lever will operate onlywhen the neutral throttle lever is in the closed
position.
EMU26232
Free accelerator
To open the throttle without shifting into ei-ther forward or reverse, push the free accel-erator button and move the remote controllever.
NOTE:
�
The free accelerator button can only beused when the remote control lever is inthe neutral position.
�
After the button is pushed, the throttle be-gins to open after the remote control leveris moved at least 35°.
�
After using the free accelerator, return the
3. Reverse “ ”4. Shift5. Fully closed6. Throttle7. Fully open
1. Neutral interlock trigger
1. Fully open2. Fully closed
1. Fully open2. Fully closed3. Free accelerator
N
ZMU04576
1
3
2
Basic components
11
remote control lever to the neutral position.The free accelerator button will return au-tomatically to its set position. The remotecontrol will then engage forward and re-
verse normally.
EMU25911
Tiller handle
To change direction, move the tiller handle tothe left or right as necessary.
EMU25922
Gear shift lever
Pulling the gear shift lever towards you putsthe engine in forward gear so that the boatmoves ahead. Pushing the lever away fromyou puts the engine in reverse gear so thatthe boat moves astern.
EMU25941
Throttle grip
The throttle grip is on the tiller handle. Turnthe grip counterclockwise to increase speedand clockwise to decrease speed.
EMU25961
Throttle indicator
The fuel consumption curve on the throttleindicator shows the relative amount of fuelconsumed for each throttle position. Choosethe setting that offers the best performanceand fuel economy for the desired operation.
EMU25971
Throttle friction adjuster
A friction device provides adjustable resis-tance to movement of the throttle grip or theremote control lever, and can be set accord-ing to operator preference.To increase resistance, turn the adjusterclockwise. To decrease resistance, turn the
1. Forward “ ”
2. Neutral “ ”
3. Reverse “ ”
1. Throttle indicator
Basic components
12
adjuster counterclockwise.
WARNING
EWM00031
Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to move the remote control leveror throttle grip, which could result in an
accident.
When constant speed is desired, tighten theadjuster to maintain the desired throttle set-
ting.
EMU25990
Engine stop lanyard switch
The lock plate must be attached to the en-gine stop switch for the engine to run. Thelanyard should be attached to a secure placeon the operator’s clothing, or arm or leg.Should the operator fall overboard or leavethe helm, the lanyard will pull out the lockplate, stopping ignition to the engine. Thiswill prevent the boat from running away un-der power.
WARNING
EWM00120
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route thelanyard where it could become entan-gled, preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in the
boat to be thrown forward.
NOTE:
The engine cannot be started with the lock
plate removed.
ZMU04563
Basic components
13
EMU26001
Engine stop button
To open the ignition circuit and stop the en-gine, push this button.
EMU26090
Main switch
The main switch controls the ignition system;its operation is described below.
�
“ ”
(off)
With the main switch in the “ ” (off) posi-tion, the electrical circuits are off, and the keycan be removed.
�
“ ”
(on)
With the main switch in the “ ” (on) posi-tion, the electrical circuits are on, and the keycannot be removed.
�
“ ”
(start)
With the main switch in the “ ” (start) po-sition, the starter motor turns to start the en-gine. When the key is released, it returnsautomatically to the “ ” (on) position.
1. Lanyard2. Lock plate
1. Lanyard2. Lock plate
1. Lanyard2. Lock plate
ZMU04565
12
Basic components
14
EMU31430
Steering friction adjuster
A friction device provides adjustable resis-tance to the steering mechanism, and can beset according to operator preference. An ad-juster lever is located on the bottom of thetiller handle bracket.To increase resistance, turn the lever to theport side “A”.To decrease resistance, turn the lever to thestarboard side “B”.
WARNING
EWM00040
Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to steer, which could result in an
accident.
If the resistance does not increase evenwhen the lever is turned to the port side “A”,make sure that the nut is tightened to thespecified torque.
NOTE:
�
Check the tiller handle for smooth move-ment when the lever is turned to the star-board side “B”.
�
Do not apply lubricants such as grease tothe friction areas of the steering friction ad-
juster.
EMU26141
Power trim and tilt switch on remote control or tiller handle
The power trim and tilt system adjusts the
ONOFF START
ZMU04567
1. Nut
Nut tightening torque:3.7 Nm (2.7 ft-lb) (0.4 kgf-m)
ZMU02810
B
A
Basic components
15
outboard motor angle in relation to the tran-som. Pressing the switch “ ” (up) trims theoutboard motor up, then tilts it up. Pressingthe switch “ ” (down) tilts the outboard mo-tor down and trims it down. When the switchis released, the outboard motor will stop in itscurrent position.
NOTE:
For instructions on using the power trim and
tilt switch, see pages 41 and 43.
EMU26151
Power trim and tilt switch on bottom engine cowling
The power trim and tilt switch is located onthe side of the bottom engine cowling. Press-ing the switch “ ” (up) trims the outboardmotor up, then tilts it up. Pressing the switch“ ” (down) tilts the outboard motor downand trims it down. When the switch is re-leased, the outboard motor will stop in itscurrent position.
WARNING
EWM01030
Use the power trim and tilt switch locatedon the bottom engine cowling only whenthe boat is at a complete stop with the en-gine off. Attempting to use this switchwhile the boat is moving could increasethe risk of falling overboard and coulddistract the operator, increasing the riskof collision with another boat or an obsta-
cle.
NOTE:
For instructions on using the power trim and
tilt switch, see page 43.
EMU30900
Variable trolling RPM switches
The trolling speed can be adjusted when the
UP
DNZMU03938
1. Power trim and tilt switch
UP
DNZMU03634
1
Basic components
16
outboard motor is trolling. Press the “ ”switch to increase the trolling speed andpress the “ ” switch to decrease the trollingspeed.
NOTE:
�
The trolling speed changes approximately50 r/min each time a switch is pressed.
�
If the trolling speed has been adjusted, theengine returns to the normal trolling speedwhen the engine is stopped and restartedor when the engine speed exceeds ap-proximately 3000 r/min.
�
For instructions on using the variable troll-
ing RPM switches, see page 40.
EMU26241
Trim tab with anode
The trim tab should be adjusted so that thesteering control can be turned to either theright or left by applying the same amount offorce.
WARNING
EWM00840
An improperly adjusted trim tab couldcause difficult steering. Always test runafter the trim tab has been installed or re-placed to be sure steering is correct. Besure you have tightened the bolt after ad-
justing the trim tab.
If the boat tends to veer the left (port side),turn the trim tab rear end to the port side “A”in the figure. If the boat tends to veer the right(starboard side), turn the trim tab end to thestarboard side “B” in the figure.
CAUTION:
ECM00840
The trim tab also serves as an anode toprotect the engine from electrochemicalcorrosion. Never paint the trim tab as it
will become ineffective as an anode.
1. Variable trolling RPM switch
1. Trim tab2. Bolt3. Cap
1. Trim tab2. Bolt
1
2
3
ZMU02525
A
B
A
B
ZMU03097
1
2
Basic components
17
EMU26340
Tilt support lever for power trim and tilt or hydro tilt model
To keep the outboard motor in the tilted upposition, lock the tilt support lever to theclamp bracket.
EMU26372
Top cowling lock lever(s) (turn type)
To remove the engine top cowling, turn thelock lever(s) and lift off the cowling. When in-stalling the cowling, check to be sure it fitsproperly in the rubber seal. Then lock thecowling again by returning the lever(s) to thelock position.
EMU26460
Flushing device
This device is used to clean the cooling wa-ter passages of the motor using a gardenhose and tap water.
NOTE:
For details on usage, see page 54.
EMU31702
Water separator
This engine has a combination fuel filter/wa-ter separator and associated warning sys-tem. If water separated from the fuelexceeds a specific volume, the warning de-vice will activate.
Activation of warning device
�
The water separator warning indicator willblink.
�
The buzzer will sound intermittently onlywhen the gear shift is in neutral.
�
If the warning system has activated, stopthe engine and consult a Yamaha dealerimmediately.
1. Top cowling lock lever(s)
ZMU03595
1
ZMU05093
1. Flushing device
1
ZMU05095
ZMU05474
Basic components
18
EMU26302
Warning indicator
If the engine develops a condition which iscause for warning, the indicator lights up. Fordetails on how to read the warning indicator,see page 27.
EMU26470
Tachometer
This gauge shows the engine speed and hasthe following functions.
EMU26491
Digital tachometer
The tachometer shows the engine speedand has the following functions.
NOTE:
All segments of the display will light momen-tarily after the main switch is turned on and
will return to normal thereafter.
1. Low oil pressure warning indicator2. Overheat warning indicator
1. Warning indicator
21
ZMU04716
1. Tachometer2. Warning indicator(s)
1. Tachometer2. Trim meter3. Hour meter4. Low oil pressure warning indicator5. Overheat warning indicator6. Water separator warning indicator7. Engine trouble warning indicator8. Set button9. Mode button
ZMU04578
1
2
1
5
2
4
3
76
8 9 ZMU04185
Basic components
19
NOTE:
The water separator and engine troublewarning indicators only operate when the en-gine is equipped with the appropriate func-
tions.
EMU26503
Low oil pressure warning indicator
If oil pressure drops too low, this indicator willflash. For further information, see page 27.
CAUTION:
ECM00020
�
Do not continue to run the engine if thelow oil pressure warning indicator is onand the engine oil level is lower. Seri-ous engine damage will occur.
�
The low oil pressure warning indicatordoes not indicate the engine oil level.Use the oil dipstick to check the re-maining oil quantity. For further infor-
mation, see page 33.
EMU26522
Low oil pressure warning indicator
If oil pressure drops too low, the warning in-dicator will start to blink. For further informa-tion, see page 27.
CAUTION:
ECM00020
�
Do not continue to run the engine if thelow oil pressure warning indicator is onand the engine oil level is lower. Seri-ous engine damage will occur.
�
The low oil pressure warning indicatordoes not indicate the engine oil level.Use the oil dipstick to check the re-maining oil quantity. For further infor-
mation, see page 33.
EMU26572
Overheat warning indicator
If the engine temperature rises too high, this
ZMU03607
ZMU04754
1. Low oil pressure warning indicator
ZMU017361
Basic components
20
indicator will flash. For further information onreading the indicator, see page 27.
CAUTION:
ECM00050
Do not continue to run the engine if theoverheat warning indicator is on. Serious
engine damage will occur.
EMU26581
Overheat warning indicator (digital type)
If the engine temperature rises too high, thewarning indicator will start to blink. For fur-ther information on reading the indicator, seepage 27.
CAUTION:
ECM00050
Do not continue to run the engine if theoverheat warning indicator is on. Serious
engine damage will occur.
EMU26600
Speedometer (digital type)
This gauge shows the boat speed.
ZMU03599
ZMU04715
1. Overheat warning indicator
1. Speedometer2. Fuel gauge3. Trip meter/clock/voltmeter4. Warning indicator(s)
ZMU01737
1
Basic components
21
NOTE:
After the main switch is first turned on, allsegments of the display come on as a test.After a few seconds, the gauge will changeto normal operation. Watch the gauge whenturning on the main switch to make sure all
segments come on.
NOTE:
The speedometer displays km/h, mph, orknots, according to operator preference. Se-lect the desired unit of measurement by set-ting the selector switch on the back of the
gauge. See the illustration for settings.
EMU26610
Trim meter
This gauge shows the trim angle of your out-board motor.
NOTE:
Memorize the trim angles that work best foryour boat under different conditions. Adjustthe trim angle to the desired setting with the
power trim and tilt switch.
EMU26620
Trim meter (digital type)
This meter shows the trim angle of your out-board motor.
NOTE:
�
Memorize the trim angles that work bestfor your boat under different conditions.Adjust the trim angle to the desired usingthe power trim and tilt switch.
�
If the trim angle of your motor exceeds thetrim operating range, the top segment on
the trim meter display will blink.
EMU26650
Hour meter (digital type)
This meter shows the number of hours the
1. Cap2. Selector switch (for speed unit)3. Selector switch (for fuel sensor)
ZMU04581
ZMU01740
Basic components
22
engine has been run. It can be set to showthe total number of hours or the number ofhours for the current trip. The display canalso be turned on and off.
�
Changing the display format
�
Pressing the “ ” (mode) button chang-es the display format in the following pat-tern:
�
Total hours
→
Trip hours
→
Display off
�
Resetting the trip hours
�
Simultaneously pressing the “ ” (set)and “ ” (mode) buttons for more than1 second while the trip hours are displayedresets the trip counter to 0 (zero).
NOTE:
The total number of hours the engine has
been run cannot be reset.
EMU26690
Trip meter
This gauge displays the distance the boathas traveled since the gauge was last reset.Press the “ ” (mode) button repeatedlyuntil the indicator on the face of the gaugepoints to “ ” (trip). To reset the trip meterto zero, press the “ ” (set) and “ ”(mode) buttons at the same time.
NOTE:
�
The trip distance is shown in kilometers ormiles depending upon the unit of measure-ment selected for the speedometer.
�
The trip distance is kept in memory by bat-tery power. The stored data will be lost if
the battery is disconnected.
EMU26700
Clock
Press the “ ” (mode) button repeatedlyuntil the indicator on the face of the gaugepoints to “ ” (time). To set the clock, besure the gauge is in the “ ” (time) mode.Press the “ ” (set) button; the hour displaywill begin blinking. Press the “ ” (mode)button until the desired hour is displayed.Press the “ ” (set) button again, the minutedisplay will begin blinking. Press the “ ”(mode) button until the desired minute is dis-played. Press the “ ” (set) button again tostart the clock.
ZMU01741
Basic components
23
NOTE:
The clock operates on battery power. Dis-connecting the battery will stop the clock.
Reset the clock after connecting the battery.
EMU26710
Fuel gauge
The fuel level is indicated by eight segments.When all segments are showing, the fueltank is full.
CAUTION:
ECM00860
The Yamaha fuel tank sensor differs fromconventional sensors. Incorrectly settingthe selector switch on the gauge will givefalse readings. Consult your Yamahadealer on how to correctly set the selec-
tor switch.
NOTE:
The fuel level reading can be affected by theposition of the sensor in the fuel tank and theattitude of the boat in the water. Operationwith bow-up trim or continuous turning can
give false readings.
EMU26720
Fuel warning indicator
If the fuel level decreases to one segment,the fuel level warning segment will begin to
blink.
CAUTION:
ECM00880
Do not continue to operate the enginewith full throttle if a warning device hasactivated. Get back to the port within troll-
ing engine speed.
EMU26730
Low battery voltage warning indicator
If battery voltage drops, the display will auto-matically turn on and begin to blink.
CAUTION:
ECM00870
Get back to the port soon if a warning de-vice has activated. For charging the bat-
tery, consult your Yamaha dealer.
ZMU01745
1. Fuel level warning segment
1. Low battery indicator
Basic components
24
EMU31651
6Y8 Multifunction meters
Multifunction meters have 6 kinds of meterunits; tachometer unit (square or roundtypes), speedometer unit (square type),speed & fuel meter unit (square or roundtypes), and fuel management meter (squaretype). The indicator system is slightly differ-ent between the round and square types.Check the model and type of your unit care-fully. This manual describes mainly thewarning indicators. For more details on set-ting meters or changing indicator systems,see the attached operation manual.
EMU31680
Tachometer unit
The tachometer shows the engine revolu-tions per minute. It has functions of trimmeter, adjusting trolling speed, cooling wa-ter/engine temperature display, battery volt-age display, total hour/trip hour display, oilpressure display, water detection warning,engine trouble warning, and periodic mainte-nance notification. If optional sensors areconnected to the unit, cooling water pressuredisplay will be available. For the optionalsensor, consult your Yamaha dealer. The ta-chometer unit is available in round or squaretypes. Check your tachometer unit type.
NOTE:
The tachometer unit shows various kinds ofinformation according to the setting madeusing the “ ” (set) and “ ” (mode) but-tons. For details, see the attached operation
manual.
Preoperation checks
Place the gear shift lever in neutral and turnthe main switch to “ ” (on). After all the dis-plays come on and the total hour displaycomes on, the gauge will change to normaloperation. If the buzzer sounds and the wa-ter separator warning indicator blinks, con-sult your Yamaha dealer immediately.
NOTE:
To stop the buzzer, press the “ ” (set) or
“ ” (mode) button.
Low oil pressure warning
When the engine oil pressure drops too low,the low oil pressure warning indicator willstart to blink, and the engine speed will auto-matically decrease to about 2000 r/min.
1. Set button2. Mode button
21
ZMU05415
1. Tachometer2. Trim meter3. Multifunction display4. Cooling water pressure5. Cooling water/engine temperature6. Water detection warning indicator7. Battery voltage8. Oil pressure (4-stroke models)
2
3
1
4
5
6
7
8 ZMU05416
Basic components
25
Stop the engine immediately if the buzzersounds and the low oil pressure warning in-dicator blinks. Check the engine oil quantityand replenish oil if necessary. If the warningdevice has activated while the appropriateengine oil quantity is maintained, consultyour Yamaha dealer.
CAUTION:
ECM01600
Do not continue to run the engine if thelow oil pressure warning device has acti-
vated. Serious engine damage will occur.
Overheat warning
If the engine temperature rises too high whilecruising, the overheat warning indicator willstart to blink. The engine speed will automat-ically decrease to about 2000 r/min.
Stop the engine immediately if the buzzersounds and the overheat warning device hasactivated. Check the cooling water inlet for
clogging.
CAUTION:
ECM01590
�
Do not continue to run the engine if theoverheat warning indicator blinks. Seri-ous engine damage will occur.
�
Do not continue to operate the engine ifa warning device has activated. Con-sult your Yamaha dealer if the problem
cannot be located and corrected.
Water separator warning
This indicator will blink when water has accu-mulated in the water separator (fuel filter)while cruising. In such an event, stop the en-gine immediately and see page 74 of thismanual to drain the water from the fuel filter.Get back to the port soon and consult aYamaha dealer immediately.
CAUTION:
ECM00910
Gasoline mixed with water could cause
damage to the engine.
Engine trouble warning
This indicator will blink when the engine mal-functions while cruising. Get back to the portsoon and consult a Yamaha dealer immedi-ately.
ZMU05430
ZMU05421
ZMU05423
Basic components
26
CAUTION:
ECM00920
In such an event, the engine will not oper-ate properly. Consult a Yamaha dealer
immediately.
Low battery voltage warning
When the battery voltage drops, the low bat-tery voltage warning indicator and the bat-tery voltage value will start to blink. Get backto the port soon if the low battery voltagewarning device has activated. For chargingthe battery, consult your Yamaha dealer.
EMU31620
Speedometer unit
This unit shows the boat speed and hasfunctions of fuel meter and system voltagedisplay. If optional sensors are connected tothe unit, trip display, water surface tempera-ture display, depth display, and clock will beavailable. For the optional sensor, consult
your Yamaha dealer.
NOTE:
After the main switch is first turned on, all thedisplays come on as a test. After a few sec-onds, the gauge will change to normal oper-
ation.
NOTE:
The speedometer unit shows various kindsof information according to the setting madeusing the “ ” (set) and “ ” (mode) but-tons. In addition, the speedometer can showthe desired unit of measurement such as km/h, mph, or knots. For details, see the at-
ZMU05425
ZMU05427
1. Set button2. Mode button
1. Speedometer2. Fuel meter3. Multifunction display
21
ZMU05436
1
23
ZMU05437
Basic components
27
tached operation manual.
EMU31630
Fuel management meter
This meter has functions of fuel flow meter,total consumption display, fuel economy dis-play, and remaining fuel display.
NOTE:
After the main switch is first turned on, all thedisplays come on as a test. After a few sec-onds, the gauge will change to normal oper-
ation.
NOTE:
The fuel management meter shows variouskinds of information when the operator uses
the “ ” (set) and “ ” (mode) buttons.For details, see the attached operation man-
ual.
EMU26801
Warning system
CAUTION:
ECM00090
Do not continue to operate the engine if awarning device has activated. Consultyour Yamaha dealer if the problem can-
not be located and corrected.
EMU26816
Overheat warning
This engine has an overheat warning device.If the engine temperature rises too high, thewarning device will activate.
Activation of warning device
�
The engine speed will automatically de-crease to about 2000 r/min.
�
If equipped with an overheat warning indi-cator, it will light or blink.
1. Set button2. Mode button
1. Fuel flow meter2. Multifunction display
21
ZMU05438
1
2
ZMU05439 ZMU04746
Basic components
28
�
The buzzer will sound (if equipped on thetiller handle, remote control box, or mainswitch panel).
If the warning system has activated, stop theengine and check the cooling water inlet forclogging.
EMU30167
Low oil pressure warning
If the oil pressure drops too low, the warningdevice will activate.
Activation of warning device
�
The engine speed will automatically de-crease to about 2000 r/min.
ZMU01757
ZMU03603 ZMU04583
ZMU03604
Basic components
29
�
If equipped with a low oil pressure warningindicator, it will light or blink.
�
The buzzer will sound (if equipped on thetiller handle, remote control box, or mainswitch panel).
If the warning system has activated, stop theengine as soon as it is safe to do so. Checkthe oil level and add oil as needed. If the oillevel is correct and the warning device doesnot switch off, consult your Yamaha dealer.
CAUTION:
ECM00100
Do not continue to run the engine if the
ZMU04587
ZMU03609
ZMU03607
ZMU04583
Basic components
30
low oil pressure warning indicator is on.
Serious engine damage could occur.
31
Operation
EMU26901
Installation
CAUTION:
ECM00110
Incorrect engine height or obstructionsto smooth water flow (such as the designor condition of the boat, or accessoriessuch as transom ladders or depth findertransducers) can create airborne waterspray while the boat is cruising. Severeengine damage may result if the motor isoperated continuously in the presence of
airborne water spray.
NOTE:
During water testing check the buoyancy ofthe boat, at rest, with its maximum load.Check that the static water level on the ex-haust housing is low enough to prevent wa-ter entry into the powerhead, when waterrises due to waves when the outboard is not
running.
EMU26910
Mounting the outboard motor
WARNING
EWM00820
�
Overpowering a boat could cause se-vere instability. Do not install an out-board motor with more horsepowerthan the maximum rating on the capac-ity plate of the boat. If the boat does nothave a capacity plate, consult the boatmanufacturer.
�
The information presented in this sec-tion is intended as reference only. It isnot possible to provide complete in-structions for every possible boat andmotor combination. Proper mountingdepends in part on experience and the
specific boat and motor combination.
WARNING
EWM00830
Improper mounting of the outboard mo-tor could result in hazardous conditionssuch as poor handling, loss of control, orfire hazards. Observe the following:
�
For permanently mounted models, yourdealer or other person experienced inproper rigging should mount the motor.If you are mounting the motor yourself,you should be trained by an experi-enced person.
�
For portable models, your dealer or oth-er person experienced in proper out-board motor mounting should show
you how to mount your motor.
Mount the outboard motor on the center line(keel line) of the boat, and ensure that theboat itself is well balanced. Otherwise theboat will be hard to steer. For boats withouta keel or which are asymmetrical, consultyour dealer.
EMU26930
Mounting height (boat bottom)
To run your boat at optimum efficiency, thewater resistance (drag) of the boat and out-board motor must be made as little as possi-ble. The mounting height of the outboard
1. Center line (keel line)
ZMU017601
Operation
32
motor greatly affects the water resistance. Ifthe mounting height is too high, cavitationtends to occur, thus reducing the propulsion;and if the propeller tips cut the air, the enginespeed will rise abnormally and cause the en-gine to overheat. If the mounting height is toolow, the water resistance will increase andthereby reduce engine efficiency. Mount theoutboard motor so that the anti-cavitationplate is in alignment with the bottom of theboat.
NOTE:
�
The optimum mounting height of the out-board motor is affected by the boat/motorcombination and the desired use. Testruns at different heights can help deter-mine the optimum mounting height. Con-sult your Yamaha dealer or boatmanufacturer for further information on de-termining the proper mounting height.
�
For instructions on setting the trim angle of
the outboard motor, see page 41.
EMU30173
Breaking in engine
Your new engine requires a period of break-in to allow mating surfaces of moving parts towear in evenly. Correct break-in will help en-sure proper performance and longer engine
life.
CAUTION:
ECM00800
Failure to follow the break-in procedurecould result in reduced engine life or
even severe engine damage.
EMU27081
Procedure for 4-stroke models
Run the engine under load (in gear with apropeller installed) for 10 hours as follows.1. First hour:
Run the engine at 2000 r/min or at ap-proximately half throttle.
2. Second hour:Run the engine at 3000 r/min or at ap-proximately three-quarter throttle.
3. Remaining eight hours:Run the engine at any speed. However,avoid operating at full throttle for morethan 5 minutes at a time.
4. After the first 10 hours:Operate the engine normally.
EMU27103
Preoperation checks
WARNING
EWM00080
If any item in the preoperation check isnot working properly, have it inspectedand repaired before operating the out-board motor. Otherwise an accident
could occur.
CAUTION:
ECM00120
Do not start the engine out of water. Over-heating and serious engine damage can
occur.
EMU31550
Fuel
�
Check to be sure you have plenty of fuelfor your trip.
�
Make sure there are no fuel leaks or gaso-
ZMU01762
Operation
33
line fumes.
�
Check fuel line connections to be sure theyare tight (if equipped Yamaha fuel tank orboat tank).
�
Be sure the fuel tank is positioned on a se-cure, flat surface, and that the fuel line isnot twisted or flattened, or likely to contactsharp objects (if equipped Yamaha fueltank or boat tank).
�
Check the water in the fuel filter with thewater separator warning device. Place thegear shift lever in neutral and turn the mainswitch to “ ”(on). If the buzzer soundsand the water separator warning indicatorblinks, consult your Yamaha dealer imme-diately.
EMU27130
Controls
�
Check throttle, shift, and steering for prop-er operation before starting the engine.
�
The controls should work smoothly, with-out binding or unusual free play.
�
Look for loose or damaged connections.
�
Check operation of the starter and stopswitches when the outboard motor is in thewater.
EMU27150
Engine
�
Check the engine and engine mounting.
�
Look for loose or damaged fasteners.
�
Check the propeller for damage.
�
Check that the battery is in good conditionand the battery connections are secure.
EMU27163
Checking the engine oil level
1. Put the outboard motor in an upright po-sition (not tilted).
2. Remove oil dipstick and wipe it clean.3. Completely insert the dipstick and re-
move it again.4. Check the oil level using the dipstick to
be sure the level falls between the upper
and lower marks. Fill with oil if it is belowthe lower mark, or drain to the specifiedlevel if it is above the upper mark.
NOTE:
Be sure to completely insert the dipstick into
the dipstick guide.
EMU27433
Filling fuel
WARNING
EWM00060
Gasoline and its vapors are highly flam-mable and explosive. Keep away fromsparks, cigarettes, flames, or other
sources of ignition.
1. Oil dipstick
1. Lower level mark2. Oil dipstick3. Upper level mark
1
ZMU05089
1 3 2
ZMU05091
Operation
34
1. Remove the fuel tank cap.2. Carefully fill the fuel tank.3. Securely close the cap after filling the
tank. Wipe up any spilled fuel.
EMU27450
Operating engine
EMU27461
Feeding fuel (portable tank)
WARNING
EWM00420
�
Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructions.Be sure there are no swimmers in thewater near you.
�
When the air vent screw is loosened,gasoline vapor will be released. Gaso-line is highly flammable, and its vaporsare flammable and explosive. Refrainfrom smoking, and keep away fromopen flames and sparks while loosen-ing the air vent screw.
�
This product emits exhaust gaseswhich contain carbon monoxide, a col-orless, odorless gas which could causebrain damage or death when inhaled.Symptoms include nausea, dizziness,and drowsiness. Keep cockpit and cab-
in areas well ventilated. Avoid blocking
exhaust outlets.
1. If there is an air vent screw on the fueltank cap, loosen it 2 or 3 turns.
2. If there is a fuel joint on the motor, firmlyconnect the fuel line to the joint. Thenfirmly connect the other end of the fuelline to the joint on the fuel tank.
3. If a steering friction adjuster is providedon your outboard motor, securely attach
Fuel tank capacity:24 L (6.34 US gal) (5.28 Imp.gal)
ZMU02834
ZMU02295
ZMU03679
ZMU02024
Operation
35
the fuel line to the fuel line clamp.
NOTE:
During engine operation place the tank hori-zontally, otherwise fuel cannot be drawn
from the fuel tank.
4. Squeeze the primer pump with the outletend up until you feel it become firm.
EMU27490
Starting engine
EMU27592
Electric start / prime start models
1. Place the gear shift lever in neutral.
NOTE:
The start-in-gear protection device preventsthe engine from starting except when in neu-
tral.
2. Attach the engine stop switch lanyard toa secure place on your clothing, or yourarm or leg. Then install the lock plate onthe other end of the lanyard into the en-
gine stop switch.
WARNING
EWM00120
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route thelanyard where it could become entan-gled, preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in the
boat to be thrown forward.
3. Place the throttle grip in the “ ”(start) position. After the engine starts,return the throttle to the fully closed po-sition.
ZMU02025
Operation
36
4. Turn the main switch to “ ” (start),and hold it for a maximum of 5 seconds.
5. Immediately after the engine starts, re-lease the main switch and allow it to re-turn to “ ” (on).
CAUTION:
ECM00191
�
Never turn the main switch to “ ”(start) while the engine is running.
�
Do not keep the starter motor turningfor more than 5 seconds. If the startermotor is turned continuously for morethan 5 seconds, the battery will bequickly discharged, thus making it im-possible to start the engine. The startercan also be damaged. If the engine willnot start after 5 seconds of cranking,return the main switch to “ ” (on), wait10 seconds, then crank the engine
again.
NOTE:
�
When the engine is cold, it needs to bewarmed up. For further information, seepage 38.
�
If the engine is warm and fails to start,open the throttle slightly and try to start theengine again. If the engine still fails to
start, see page 71.
EMU27662
Electric start and remote control models
1. Place the remote control lever in neutral.
NOTE:
The start-in-gear protection device preventsthe engine from starting except when in neu-
tral.
2. Attach the engine stop switch lanyard toa secure place on your clothing, or yourarm or leg. Then install the lock plate onthe other end of the lanyard into the en-gine stop switch.
WARNING
EWM00120
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route thelanyard where it could become entan-
N
ZMU04588
Operation
37
gled, preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in the
boat to be thrown forward.
3. Turn the main switch to “ ” (on).4. Turn the main switch to “ ” (start),
and hold it for a maximum of 5 seconds.
5. Immediately after the engine starts, re-lease the main switch and allow it to re-turn to “ ” (on).
CAUTION:
ECM00191
�
Never turn the main switch to “ ”(start) while the engine is running.
�
Do not keep the starter motor turningfor more than 5 seconds. If the startermotor is turned continuously for morethan 5 seconds, the battery will bequickly discharged, thus making it im-possible to start the engine. The startercan also be damaged. If the engine willnot start after 5 seconds of cranking,return the main switch to “ ” (on), wait10 seconds, then crank the engine
again.
NOTE:
�
When the engine is cold, it needs to be
ZMU04595
ONSTART
ZMU04596
Operation
38
warmed up. For further information, seepage 38.
�
If the engine is warm and fails to start,open the throttle slightly and try to start theengine again. If the engine still fails to
start, see page 71.
EMU27670
Warming up engine
EMU27710
Manual start and electric start models
1. After starting the engine, allow it to idlefor 3 minutes to warm up. Failure to doso will shorten engine life.
2. Be sure the low oil pressure warning in-dicator goes off after starting the engine.
3. Check for a steady flow of water from thecooling water pilot hole.
CAUTION:
ECM00210
�
If the low oil pressure warning indicatordoes not go off after the engine starts,stop the engine. Otherwise serious en-gine damage could occur. Check the oillevel and add oil if necessary. Consultyour Yamaha dealer if the cause for thelow oil pressure warning indicator can-not be found.
�
A continuous flow of water from the pi-lot hole shows that the water pump ispumping water through the coolingpassages. If water is not flowing out ofthe pilot hole at all times while the en-gine is running, overheating and seri-ous damage could occur. Stop theengine and check whether the coolingwater inlet on the lower case or thecooling water pilot hole is blocked.Consult your Yamaha dealer if the prob-
lem cannot be located and corrected.
EMU27740
Shifting
WARNING
EWM00180
Before shifting, make sure there are noswimmers or obstacles in the water near
you.
CAUTION:
ECM00220
To change the boat direction or shiftingposition from forward to reverse or vice-versa, first close the throttle so that the
engine idles (or runs at low speeds).
EMU27764
Forward (tiller handle and remote control models)
Tiller handle models1. Place the throttle grip in the fully closed
position.
2. Move the gear shift lever quickly and
ZMU05092
Operation
39
firmly from neutral to forward.
Remote control models1. Pull up the neutral interlock trigger (if
equipped) and move the remote controllever quickly and firmly from neutral toforward.
EMU27785
Reverse (automatic reverse lock and power trim and tilt models)
WARNING
EWM00190
When operating in reverse, go slowly. Donot open the throttle more than half. Oth-erwise the boat could become unstable,which could result in loss of control and
an accident.
Tiller handle models1. Place the throttle grip in the fully closed
position.
2. Move the gear shift lever quickly andfirmly from neutral to reverse.
Remote control models1. Pull up the neutral interlock trigger (if
equipped) and move the remote controllever quickly and firmly from neutral toreverse.
NF
ZMU04597
Operation
40
EMU30880
Trolling
EMU30890
Adjusting trolling speed
The trolling speed on outboard motorsequipped with the variable trolling RPMswitches can be adjusted approximately 50r/min with each press of a switch.
To increase the trolling speed, press the “ ”switch.To decrease the trolling speed, press the“ ” switch.
NOTE:
�
The trolling speed changes approximately50 r/min each time a switch is pressed.
�
If the trolling speed has been adjusted, theengine returns to the normal trolling speedwhen the engine is stopped and restartedor when the engine speed exceeds ap-
proximately 3000 r/min.
EMU27820
Stopping engine
Before stopping the engine, first let it cool offfor a few minutes at idle or low speed. Stop-ping the engine immediately after operatingat high speed is not recommended.
EMU27844
Procedure
1. Push and hold the engine stop button orturn the main switch to “ ” (off).
1. “ ” switch
2. “ ” switch
NR
ZMU04598
Operation
41
2. After stopping the engine, disconnectthe fuel line if there is a fuel joint on theoutboard motor.
3. Tighten the air vent screw on the fueltank cap (if equipped).
4. Remove the key if the boat will be leftunattended.
NOTE:
The engine can also be stopped by pullingthe lanyard and removing the lock plate fromthe engine stop switch, then turning the main
switch to “ ” (off).
EMU27861
Trimming outboard motor
The trim angle of the outboard motor helpsdetermine the position of the bow of the boatin the water. Correct trim angle will help im-prove performance and fuel economy whilereducing strain on the engine. Correct trimangle depends upon the combination ofboat, engine, and propeller. Correct trim isalso affected by variables such as the load inthe boat, sea conditions, and running speed.
WARNING
EWM00740
Excessive trim for the operating condi-tions (either trim up or trim down) cancause boat instability and can makesteering the boat more difficult. This in-creases the possibility of an accident. Ifthe boat begins to feel unstable or is hardto steer, slow down and/or readjust the
trim angle.
ONOFF START
ZMU04599
ZMU03632
ZMU02301
Operation
42
EMU27882
Adjusting trim angle
Power trim and tilt models
WARNING
EWM00751
�
Be sure all people are clear of the out-board motor when adjusting the tilt an-gle, also be careful not to pinch anybody parts between the drive unit andclamp bracket.
�
Use caution when trying a trim positionfor the first time. Increase speed gradu-ally and watch for any signs of instabil-ity or control problems. Improper trimangle can cause loss of control.
�
If equipped with a power trim and tiltswitch located on the bottom cowling,use the switch only when the boat is ata complete stop with the engine off. Donot adjust the trim angle with this
switch while the boat is moving.
Adjust the outboard motor trim angle usingthe power trim and tilt switch.
To raise the bow (trim-out), press the switch“ ” (up).
1. Trim operating angle
1ZMU03633
1. Power trim and tilt switch
1. Power trim and tilt switch
1. Power trim and tilt switch
UP
DNZMU03634
1
Operation
43
To lower the bow (trim-in), press the switch“ ” (down).Make test runs with the trim set to differentangles to find the position that works best foryour boat and operating conditions.
EMU27911
Adjusting boat trim
When the boat is on plane, a bow-up attituderesults in less drag, greater stability and effi-ciency. This is generally when the keel line ofthe boat is up about 3 to 5 degrees. With thebow up, the boat may have a greater tenden-cy to steer to one side or the other. Compen-sate for this as you steer. The trim tab canalso be adjusted to help offset this effect.When the bow of the boat is down, it is easierto accelerate from a standing start ontoplane.
Bow Up
Too much trim-out puts the bow of the boattoo high in the water. Performance and econ-omy are decreased because the hull of theboat is pushing the water and there is moreair drag. Excessive trim-out can also causethe propeller to ventilate, which reduces per-formance further, and the boat may “por-poise” (hop in the water), which could throwthe operator and passengers overboard.
Bow Down
Too much trim-in causes the boat to “plow”through the water, decreasing fuel economyand making it hard to increase speed. Oper-ating with excessive trim-in at higher speedsalso makes the boat unstable. Resistance atthe bow is greatly increased, heightening thedanger of “bow steering” and making opera-tion difficult and dangerous.
NOTE:
Depending on the type of boat, the outboardmotor trim angle may have little effect on the
trim of the boat when operating.
EMU27933
Tilting up and down
If the engine will be stopped for some time orif the boat is moored in shallows, the out-board motor should be tilted up to protect thepropeller and casing from damage by colli-sion with obstructions, and also to reduce
Operation
44
salt corrosion.
WARNING
EWM00220
Be sure all people are clear of the out-board motor when tilting up and down,also be careful not to pinch any bodyparts between the drive unit and engine
bracket.
WARNING
EWM00250
Leaking fuel is a fire hazard. If there is afuel joint on the outboard motor, discon-nect the fuel line or close the fuel cock ifthe engine will be tilted for more than a
few minutes. Otherwise fuel may leak.
CAUTION:
ECM00241
�
Before tilting the outboard motor, stopthe engine by following the procedureon page 40. Never tilt the outboard mo-tor while the engine is running. Severedamage from overheating can result.
�
Do not tilt up the engine by pushing thetiller handle (if equipped) because this
could break the handle.
EMU28007
Procedure for tilting up (power trim and tilt models / power tilt models)
1. Place the remote control lever / gearshift lever in neutral.
2. Disconnect the fuel line from the out-board motor or close the fuel cock.
3. Press the power trim and tilt switch /power tilt switch “ ” (up) until the out-board motor has tilted up completely.
N
ZMU03196
N
ZMU04588
ZMU03638
Operation
45
4. Push the tilt support knob into the clampbracket or pull the tilt support lever to-ward you to support the engine.
WARNING
EWM00260
After tilting the outboard motor, be sureto support it with the tilt support knob ortilt support lever. Otherwise the outboardmotor could fall back down suddenly if oilin the power trim and tilt unit loses pres-
sure.
5. Models equipped with trim rods: Oncethe outboard motor is supported with thetilt support lever, press the power trimand tilt switch / power tilt switch “ ”(down) to retract the trim rods.
CAUTION:
ECM00250
Be sure to retract the trim rods complete-ly during mooring. This protects the rodsfrom marine growth and corrosion whichcould damage the power trim and tilt
mechanism.
EMU28055
Procedure for tilting down (power trim and tilt models / power tilt models)
1. Push the power trim and tilt switch / pow-er tilt switch “ ” (up) until the outboardmotor is supported by the tilt rod and the
UP
ZMU03639
UP
ZMU04194
ZMU03640
Operation
46
tilt support lever / tilt support knob be-comes free.
2. Release the tilt support lever or pull outthe tilt support knob.
3. Push the power trim and tilt switch / pow-er tilt switch “ ” (down) to lower the out-board motor to the desired position.
EMU28060
Cruising in shallow water
The outboard motor can be tilted up partiallyto allow operation in shallow water.
EMU28090
Power trim and tilt models / power tilt models
The outboard motor can be tilted up partiallyto allow operation in shallow water.
WARNING
EWM00660
�
Place the gear shift in neutral beforesetting up for shallow water cruising.
�
Return the outboard motor to its normalposition as soon as the boat is back in
deeper water.
CAUTION:
ECM00260
Do not tilt the outboard motor up so thatthe cooling water inlet on the lower unit isabove the surface of the water when set-
ZMU03644
DN
ZMU01936
UP
DN
DNZMU03645
DNZMU04196
Operation
47
ting up for and cruising in shallow water.Otherwise severe damage from overheat-
ing can result.
EMU28185
Procedure for power trim and tilt / powertilt models
1. Place the remote control lever / gearshift lever in neutral.
2. Slightly tilt the outboard motor up to thedesired position using the power trimand tilt switch / power tilt switch.
N
ZMU04588
UP
ZMU01935
UP
DN
UP
ZMU03650
UP
ZMU04194
Operation
48
3. To return the outboard motor to the nor-mal running position, press the powertrim and tilt switch / power tilt switch andslowly tilt the outboard motor down.
EMU28192
Cruising in other conditions
Cruising in salt water
After operating in salt water, flush the coolingwater passages with fresh water to preventthem from becoming clogged with salt de-posits.
NOTE:
For cooling system flushing instructions, see
page 51.
Cruising in turbid water
Yamaha strongly recommends that you usethe optional chromium-plated water pump kit(not available for some models) if you usethe outboard motor in turbid or muddy waterconditions.
49
Maintenance
EMU31480
SpecificationsNOTE:
“(AL)” stated in the specification data belowrepresents the numerical value for the alumi-num propeller installed.Likewise, “(SUS)” represents the value forstainless steel propeller installed and “(PL)”
for plastic propeller installed.
EMU28218
Dimension:
Overall length: F50FEHT 1339 mm (52.7 in)F50FET 706 mm (27.8 in)F60CEHT 1339 mm (52.7 in)F60CET 706 mm (27.8 in)FT50GET 706 mm (27.8 in)FT60DET 706 mm (27.8 in)
Overall width: 384 mm (15.1 in)
Overall height L: F50FEHT 1415 mm (55.7 in)F50FET 1415 mm (55.7 in)F60CEHT 1415 mm (55.7 in)F60CET 1415 mm (55.7 in)FT50GET 1455 mm (57.3 in)FT60DET 1455 mm (57.3 in)
Overall height X: FT50GET 1569 mm (61.8 in)FT60DET 1569 mm (61.8 in)
Transom height L: F50FEHT 527 mm (20.7 in)F50FET 527 mm (20.7 in)F60CEHT 527 mm (20.7 in)F60CET 527 mm (20.7 in)FT50GET 530 mm (20.9 in)FT60DET 530 mm (20.9 in)
Transom height X: FT50GET 644 mm (25.4 in)FT60DET 644 mm (25.4 in)
Weight (AL) L: F50FEHT 114.0 kg (251 lb)F50FET 110.0 kg (243 lb)F60CEHT 114.0 kg (251 lb)F60CET 110.0 kg (243 lb)FT50GET 115.0 kg (254 lb)FT60DET 115.0 kg (254 lb)
Weight (AL) X: FT50GET 119.0 kg (262 lb)FT60DET 119.0 kg (262 lb)
Performance:
Full throttle operating range: 5000–6000 r/min
Maximum output: F50FEHT 36.8 kW@5500 r/min (50 HP@5500 r/min)F50FET 36.8 kW@5500 r/min (50 HP@5500 r/min)F60CEHT 44.1 kW@5500 r/min (60 HP@5500 r/min)F60CET 44.1 kW@5500 r/min (60 HP@5500 r/min)FT50GET 36.8 kW@5500 r/min (50 HP@5500 r/min)FT60DET 44.1 kW@5500 r/min (60 HP@5500 r/min)
Idling speed (in neutral): 750
±
50 r/min
Engine:
Type: 4-stroke L
Displacement: 996.0 cm
3
(60.78 cu.in)Bore
×
stroke: 65.0
×
75.0 mm (2.56
×
2.95 in)Ignition system:
TCISpark plug with resistor (NGK):
DPR6EB-9Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Maintenance
50
Control system: F50FEHT TillerF50FET Remote controlF60CEHT TillerF60CET Remote controlFT50GET Remote controlFT60DET Remote control
Starting system: Electric
Starting carburetion system: Electronic fuel injection
Valve clearance (cold engine) IN: 0.15–0.25 mm (0.0059–0.0098 in)
Valve clearance (cold engine) EX: 0.25–0.35 mm (0.0098–0.0138 in)
Min. cold cranking amps (CCA/EN): 430.0 A
Min. rated capacity (20HR/IEC): 70.0 Ah
Alternator output for battery DC: 17.0 A
Drive unit:
Gear positions: Forward-neutral-reverse
Gear ratio: F50FEHT 1.85 (24/13)F50FET 1.85 (24/13)F60CEHT 1.85 (24/13)F60CET 1.85 (24/13)FT50GET 2.33 (28/12)FT60DET 2.33 (28/12)
Trim and tilt system: Power trim and tilt
Propeller mark: F50FEHT GF50FET GF60CEHT GF60CET GFT50GET KFT60DET K
Fuel and oil:
Recommended fuel: Regular unleaded gasoline
Min. research octane: 90
Fuel tank capacity: 24 L (6.34 US gal) (5.28 Imp.gal)
Recommended engine oil: 4-stroke outboard motor oil
Engine oil grade API: API SE, SF, SG, SH, SJ, SL
Engine oil type SAE: SAE10W30 or SAE10W40
Lubrication: Wet sump
Engine oil quantity (excluding oil filter): 2.5 L (2.64 US qt) (2.20 Imp.qt)
Recommended gear oil: Hypoid gear oil SAE#90
Gear oil quantity: F50FEHT 430.0 cm
3
(14.54 US oz) (15.17 Imp.oz)F50FET 430.0 cm
3
(14.54 US oz) (15.17 Imp.oz)F60CEHT 430.0 cm
3
(14.54 US oz) (15.17 Imp.oz)F60CET 430.0 cm
3
(14.54 US oz) (15.17 Imp.oz)FT50GET 670.0 cm
3
(22.65 US oz) (23.63 Imp.oz)FT60DET 670.0 cm
3
(22.65 US oz) (23.63 Imp.oz)
Tightening torque for engine:
Spark plug: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
Propeller nut: 35.0 Nm (25.8 ft-lb) (3.57 kgf-m)
Engine oil drain bolt: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
Engine oil filter: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
Maintenance
51
EMU28222
Transporting and storing outboard motor
WARNING
EWM00690
�
Leaking fuel is a fire hazard. Whentransporting and storing the outboardmotor, close the air vent screw and fuelcock to prevent fuel from leaking.
�
USE CARE when transporting fuel tank,whether in a boat or car.
�
DO NOT fill fuel container to maximumcapacity. Gasoline will expand consid-erably as it warms up and can build uppressure in the fuel container. This cancause fuel leakage and a potential fire
hazard.
WARNING
EWM00700
Never get under the lower unit while it istilted, even if a motor support bar is used.Severe injury could occur if the outboard
motor accidentally falls.
CAUTION:
ECM00660
Do not use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tilt sup-port and fall. If the motor cannot be trail-ered in the normal running position, usean additional support device to secure it
in the tilt position.
The outboard motor should be trailered andstored in the normal running position. If thereis insufficient road clearance in this position,then trailer the outboard motor in the tilt po-sition using a motor support device such asa transom saver bar. Consult your Yamahadealer for further details.
EMU28290
Storing outboard motor
When storing your Yamaha outboard motorfor prolonged periods of time (2 months orlonger), several important procedures mustbe performed to prevent excessive damage.It is advisable to have your outboard motorserviced by an authorized Yamaha dealerprior to storage. However, you, the owner,with a minimum of tools, can perform the fol-lowing procedures.
CAUTION:
ECM00600
�
To prevent problems which can becaused by oil entering the cylinder fromthe sump, keep the outboard motor inthe attitude shown when transportingand storing it. If storing or transportingthe outboard motor on its side (not up-right), put it on a cushion after drainingthe engine oil.
�
Do not place the outboard motor on itsside before the cooling water hasdrained from it completely, otherwisewater may enter the cylinder throughthe exhaust port and cause engine trou-ble.
�
Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.
�
Drain the remaining gasoline from thevapor separator. Gasoline left in the va-
ZMU03659
Maintenance
52
por separator for a prolonged period oftime will break down and could cause
damage to the fuel line.
EMU28302
Procedure
EMU29953
Flushing with the flushing attachment
1. Wash the outboard motor body usingfresh water. For further information, seepage 55.
2. Disconnect the fuel line from the motoror shut off the fuel cock, if equipped.
3. Remove the top cowling and propeller.4. Install the flushing attachment over the
cooling water inlet.
CAUTION:
ECM00300
Do not run the engine without supplyingit with cooling water. Either the enginewater pump will be damaged or the en-gine will be damaged from overheating.Before starting the engine, be sure tosupply water to the cooling water passag-
es.
CAUTION:
ECM00310
Avoid running the outboard motor at highspeed while on the flushing attachment,
otherwise overheating could occur.
5. Cooling system flushing is essential toprevent the cooling system from clog-ging up with salt, sand, or dirt. In addi-tion, fogging/lubricating the engine ismandatory to prevent excessive enginedamage due to rust. Perform the flush-ing and fogging at the same time.
WARNING
EWM00090
�
Do not touch or remove electrical partswhen starting or during operation.
�
Keep hands, hair, and clothes awayfrom the flywheel and other rotating
parts while the engine is running.
NOTE:
�
When using the flushing attachment,maintain adequate water pressure and asteady water flow.
�
If the overheat warning device is activated,turn the engine off, and consult your
Yamaha dealer.
6. Run the engine at a fast idle for a fewminutes in neutral position.
7. Just prior to turning off the engine, quick-ly spray “Fogging Oil” alternately into theintake silencer or the fogging hole of thesilencer cover, if equipped. When prop-erly done, the engine will smoke exces-sively and almost stall.
8. Drain the remained gasoline in the vaporseparator with a container. Loosen thedrain screw, and then remove the cap.Push in the air valve with a screwdriverto introduce air into the float chamber, sothat the gasoline will drain smoothly.Then, tighten the drain screw.
1. Flushing attachment
Maintenance
53
9. Remove the flushing attachment.10. Install the top cowling.11. If “Fogging Oil” is not available, turn off
the engine after the 6 step. Then per-form the 8 step procedure.
12. Drain the cooling water completely outof the motor. Clean the body thoroughly.
13. If the “Fogging Oil” is not available, re-move the spark plug(s). Pour a tea-spoonful of clean engine oil into eachcylinder. Crank several times manually.Replace the spark plug(s).
NOTE:
A flushing attachment is available from your
Yamaha dealer.
EMU28401
Lubrication
1. Grease the spark plug threads and in-stall the spark plug(s) and torque toproper specification. For information onspark plug installation, see page 59.
2. Change the gear oil. For instructions,see page 66. Inspect the oil for the pres-ence of water that indicates a leaky seal.Seal replacement should be performedby an authorized Yamaha dealer prior touse.
3. Grease all grease fittings. For further de-tails, see page 58.
EMU28430
Battery care
WARNING
EWM00330
Battery electrolytic fluid is dangerous; itcontains sulfuric acid and therefore ispoisonous and highly caustic.Always follow these preventive mea-sures:
�
Avoid bodily contact with electrolyticfluid as it can cause severe burns orpermanent eye injury.
�
Wear protective eye gear when han-dling or working near batteries.
Antidote (EXTERNAL):
�
SKIN - Flush with water.
�
EYES - Flush with water for 15 minutesand get immediate medical attention.
Antidote (INTERNAL):
�
Drink large quantities of water or milkfollowed by milk of magnesia, beatenegg, or vegetable oil. Get immediatemedical attention.
Batteries also generate explosive hydro-gen gas; therefore, you should always
1. Vapor separator2. Drain screw
1. Air valve2. Cap
1
2 ZMU05116
12
ZMU05115
Maintenance
54
follow these preventive measures:
�
Charge batteries in a well-ventilated ar-ea.
�
Keep batteries away from fire, sparks,or open flames (for example: weldingequipment, lighted cigarettes, and soon.)
�
DO NOT SMOKE when charging or han-dling batteries.
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
Batteries vary among manufacturers. There-fore the following procedures may not al-ways apply. Consult your batterymanufacturer’s instructions.Procedure1. Disconnect and remove the battery from
the boat. Always disconnect the blacknegative cable first to prevent the risk ofshorting.
2. Clean the battery casing and terminals.Fill each cell to the upper level with dis-tilled water.
3. Store the battery on a level surface in acool, dry, well-ventilated place out of di-rect sunlight.
4. Once a month, check the specific gravityof the electrolyte and recharge as re-quired to prolong battery life.
EMU28442
Flushing power unit
Perform this procedure right after operationfor the most thorough flushing.
CAUTION:
ECM01530
Do not perform this procedure while theengine is running. The water pump maybe damaged and severe damage from
overheating can result.
1. After shutting off the engine, unscrewthe garden hose connector from the fit-
ting on the bottom cowling.
2. Screw the garden hose adapter onto agarden hose, which is connected to afresh water supply, and then connect itto the garden hose connector.
3. With the engine off, turn on the water tapand let the water flush through the cool-ing passages for about 15 minutes. Turnoff the water and disconnect the gardenhose adapter from the garden hose con-nector.
4. Reinstall the garden hose connectoronto the fitting on the bottom cowling.Tighten the connector securely.
CAUTION:
ECM00540
Do not leave the garden hose connectorloose on the bottom cowling fitting or let
1. Fitting2. Garden hose adapter3. Garden hose connector
1
32
ZMU05096
Maintenance
55
the hose hang free during normal opera-tion. Water will leak out of the connectorinstead of cooling the engine, which cancause serious overheating. Be sure theconnector is tightened securely on the fit-
ting after flushing the engine.
NOTE:
�
When flushing the engine with the boat inthe water, tilting up the outboard motor un-til it is completely out of the water willachieve better results.
�
For cooling system flushing instructions,
see page 51.
EMU28450
Cleaning the outboard motor
After use, wash the exterior of the outboardmotor with fresh water. Flush the coolingsystem with fresh water.
NOTE:
For cooling system flushing instructions, see
page 51.
EMU28460
Checking painted surface of motor
Check the motor for scratches, nicks, or flak-ing paint. Areas with damaged paint aremore likely to corrode. If necessary, cleanand paint the areas. A touch-up paint is avail-able from your Yamaha dealer.
EMU28476
Periodic maintenance
WARNING
EWM01070
Be sure to turn off the engine when youperform maintenance unless otherwisespecified. If you or the owner is not famil-iar with machine servicing, this workshould be done by your Yamaha dealer or
other qualified mechanic.
EMU28510
Replacement parts
If replacement parts are necessary, use onlygenuine Yamaha parts or parts of the sametype and of equivalent strength and materi-als. Any part of inferior quality may malfunc-tion, and the resulting loss of control couldendanger the operator and passengers.Yamaha genuine parts and accessories areavailable from your Yamaha dealer.
ZMU02550
Maintenance
56
EMU28522
Maintenance chart
Frequency of maintenance operations may be adjusted according to the operating condi-tions, but the following table gives general guidelines. Refer to the sections in this chapter forexplanations of each owner-specific action.
NOTE:
When operating in salt water, turbid or muddy water, the engine should be flushed with clean
water after each use.
The “ ” symbol indicates the check-ups which you may carry out yourself.The “ ” symbol indicates work to be carried out by your Yamaha dealer.
Item Actions
Initial Every
10 hours (1 month)
50 hours (3
months)
100 hours (6 months)
200 hours (1
year)
Anode(s) (external)Inspection / replace-ment
Anode(s) (internal)Inspection / replace-ment
Battery Inspection / charging
Cooling water pas-sages
Cleaning
Cowling clamp Inspection
Fuel filter (disposable)Inspection / replace-ment
Fuel system Inspection
Fuel tank (Yamaha por-table tank)
Inspection / cleaning
Gear oil Change
Greasing points Greasing
Idling speed Inspection
Power trim and tilt unit Inspection
Propeller and cotter pinInspection / replace-ment
Shift link / shift cable Inspection / adjustment
ThermostatInspection / replace-ment
Throttle link / throttle cable / throttle pick-up timing
Inspection / adjustment
Water pumpInspection / replace-ment
Maintenance
57
EMU28874
Maintenance chart (additional)
Engine oil Inspection / change
Oil filter (cartridge) Change
Spark plug(s)Cleaning / adjustment / replacement
Timing beltInspection / replace-ment
Valve clearance (OHC, OHV)
Inspection / adjustment
Item ActionsEvery
500 hours (2.5 years) 1000 hours (5 years)
Timing belt Replacement
Fuel filter (vapor sepa-rator tank)
Replacement
Anode(s) (exhaust cover, cover joint)
Replacement
Exhaust guide, exhaust manifold
Inspection / replace-ment
Item Actions
Initial Every
10 hours (1 month)
50 hours (3
months)
100 hours (6 months)
200 hours (1
year)
Maintenance
58
EMU28940
Greasing
Yamaha grease A (water resistant grease)Yamaha grease D (corrosion resistant grease; for propeller shaft)
F50F, FT50G, F60C, FT60D
ZMU05087
Maintenance
59
F50F, F60C
EMU28952
Cleaning and adjusting spark plug
WARNING
EWM00560
When removing or installing a spark plug,be careful not to damage the insulator. Adamaged insulator could allow externalsparks, which could lead to explosion or
fire.
The spark plug is an important engine com-ponent and is easy to inspect. The conditionof the spark plug can indicate something
about the condition of the engine. For exam-ple, if the center electrode porcelain is verywhite, this could indicate an intake air leak orcarburetion problem in that cylinder. Do notattempt to diagnose any problems yourself.Instead, take the outboard motor to aYamaha dealer. You should periodically re-move and inspect the spark plug becauseheat and deposits will cause the spark plugto slowly break down and erode. If electrodeerosion becomes excessive, or if carbon andother deposits are excessive, you should re-
ZMU05103
Maintenance
60
place the spark plug with another of the cor-rect type.
Before fitting the spark plug, measure theelectrode gap with a wire thickness gauge;adjust the gap to specification if necessary.
When fitting the plug, always clean the gas-ket surface and use a new gasket. Wipe offany dirt from the threads and screw in thespark plug to the correct torque.
NOTE:
If a torque-wrench is not available when youare fitting a spark plug, a good estimate ofthe correct torque is 1/4 to 1/2 a turn past fin-ger-tight. Have the spark plug adjusted to thecorrect torque as soon as possible with a
torque-wrench.
EMU28962
Checking fuel system
WARNING
EWM00060
Gasoline and its vapors are highly flam-mable and explosive. Keep away fromsparks, cigarettes, flames, or other
sources of ignition.
WARNING
EWM00910
Leaking fuel can result in fire or explo-sion.
�
Check for fuel leakage regularly.
�
If any fuel leakage is found, the fuelsystem must be repaired by a qualifiedmechanic. Improper repairs can make
the outboard unsafe to operate.
Check the fuel lines for leaks, crack, or mal-function. If a problem is found, your Yamahadealer or other qualified mechanic should re-pair it immediately.
Standard spark plug:DPR6EB-9
1. Spark plug gap2. Spark plug I.D. mark (NGK)3. Spark plug part number
Spark plug gap:0.8–0.9 mm (0.031–0.035 in)
Spark plug torque:18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
ZMU05094
Maintenance
61
Checkpoints
�
Fuel system parts leakage
�
Fuel line joint leakage
�
Fuel line cracks or other damage
�
Fuel connector leakage
EMU29041
Inspecting idling speed
WARNING
EWM00451
�
Do not touch or remove electrical partswhen starting or during operation.
�
Keep hands, hair, and clothes awayfrom the flywheel and other rotating
parts while the engine is running.
CAUTION:
ECM00490
This procedure must be performed whilethe outboard motor is in the water. Aflushing attachment or test tank can be
used.
A diagnostic tachometer should be used forthis procedure. Results may vary dependingon whether testing is conducted with theflushing attachment, in a test tank, or with theoutboard motor in the water.1. Start the engine and allow it to warm up
fully in neutral until it is running smooth-ly.
NOTE:
Correct idling speed inspection is only possi-ble if the engine is fully warmed up. If notwarmed up fully, the idle speed will measurehigher than normal. If you have difficulty ver-ifying the idle speed, or the idle speed re-quires adjustment, consult a Yamaha dealer
or other qualified mechanic.
2. Verify whether the idle speed is set tospecification. For idle speed specifica-tions, see page 49.
EMU29073
Changing engine oil
WARNING
EWM00760
�
Avoid draining the engine oil immedi-ately after stopping the engine. The oilis hot and should be handled with careto avoid burns.
�
Be sure the outboard motor is securelyfastened to the transom or a stable
stand.
CAUTION:
ECM00970
�
Do not overfill the oil, and be sure theoutboard motor is upright (not tilted)when checking and changing the en-gine oil.
�
If the oil level is above the upper levelmark, drain until the level meets thespecified capacity. Overfilling the oil
could cause leakage or damage.
CAUTION:
ECM01240
Change the engine oil after the first 10hours of operation, and every 100 hoursor at 6-month intervals thereafter. Other-
wise the engine will wear quickly.
NOTE:
Change the engine oil when the oil is still
warm.
1. Put the outboard motor in an upright po-sition (not tilted).
Maintenance
62
2. Prepare a suitable container that holds alarger amount than the engine oil capac-ity. Loosen and remove the drain screwwhile holding the container under thedrain hole. Then remove the oil filler cap.Let the oil drain completely. Wipe up anyspilled oil immediately.
3. Put a new gasket on the oil drain screw.Apply a light coat of oil to the gasket andinstall the drain screw.
NOTE:
If a torque wrench is not available when youare installing the drain screw, finger tightenthe screw just until the gasket comes intocontact with the surface of the drain hole.
Then tighten 1/4 to 1/2 turn more. Tightenthe drain screw to the correct torque with a
torque wrench as soon as possible.
4. Add the correct amount of oil through thefiller hole. Install the filler cap.
5. Start the engine and watch to make surethe low oil pressure warning indicator (ifequipped) turns off. Make sure thatthere are no oil leaks.
CAUTION:
ECM00680
If the low oil pressure warning indicatordoes not turn off or if there are oil leaks,stop the engine and find the cause. Con-tinued operation with a problem couldcause severe engine damage. Consultyour Yamaha dealer if the problem can-
not be located and corrected.
6. Turn off the engine and wait 3 minutes.Recheck the oil level using the dipstickto be sure the level falls between the up-per and lower marks. Fill with oil if it isbelow the lower mark, or drain to the
1. Drain screw
Drain screw tightening torque:18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
ZMU03659
1ZMU03660
Recommended engine oil:4-stroke outboard motor oil
Engine oil quantity (excluding oil filter):2.5 L (2.64 US qt) (2.20 Imp.qt)
1. Oil filler cap
1
ZMU05101
Maintenance
63
specified level if it is above the uppermark.
7. Dispose of used oil according to localregulations.
NOTE:
�
For more information on the disposal ofused oil, consult your Yamaha dealer.
�
Change the oil more often when operatingthe engine under adverse conditions such
as extended trolling.
EMU29112
Checking wiring and connectors
�
Check that each grounding wire is properlysecured.
�
Check that each connector is engaged se-curely.
EMU29120
Exhaust leakage
Start the engine and check that no exhaustleaks from the joints between the exhaustcover, cylinder head, and body cylinder.
EMU29130
Water leakage
Start the engine and check that no waterleaks from the joints between the exhaustcover, cylinder head, and body cylinder.
EMU29140
Engine oil leakage
Check for oil leaks on the around the engine.
NOTE:
If any leaks are found, consult your Yamaha
dealer.
EMU29163
Checking power trim and tilt / power tilt system
WARNING
EWM00430
�
Never get under the lower unit while itis tilted, even when the tilt support leveris locked. Severe injury could occur ifthe outboard motor accidentally falls.
�
Make sure no one is under the outboard
motor before performing this test.
1. Check the power trim and tilt unit / powertilt unit for any sign of oil leaks.
2. Operate each of the power trim and tiltswitches / power tilt switches to checkthat all switches work.
3. Tilt the outboard motor up and checkthat the trim and tilt rod / the tilt rod ispushed out completely.
4. Check that the trim and tilt rod / the tiltrod is free of corrosion or other flaws.
5. Tilt the outboard motor down. Check
1. Lower level mark2. Oil dipstick3. Upper level mark
1 3 2
ZMU05091
1. Trim and tilt rod
1
ZMU03662
Maintenance
64
that the trim and tilt rod / the tilt rod oper-ates smoothly.
NOTE:
Consult your Yamaha dealer if any operation
is abnormal.
EMU29171
Checking propeller
WARNING
EWM00321
You could be seriously injured if the en-gine accidentally starts when you arenear the propeller.
�
Before inspecting, removing, or install-ing the propeller, remove the sparkplug caps from the spark plugs. Also,place the shift control in neutral, turnthe main switch to “ ” (off) and re-move the key, and remove the lanyardfrom the engine stop switch. Turn offthe battery cut-off switch if your boathas one.
�
Do not use your hand to hold the pro-peller when loosening or tightening thepropeller nut. Put a wood block be-tween the anti-cavitation plate and thepropeller to prevent the propeller from
turning.
Checkpoints
�
Check each of the propeller blades forwear, erosion from cavitation or ventila-tion, or other damage.
�
Check the propeller shaft for damage.
�
Check the splines / shear pin for wear ordamage.
�
Check for fish line tangled around the pro-peller shaft.
�
Check the propeller shaft oil seal for dam-age.
NOTE:
If the shear pin equipped: it is designed tobreak if the propeller hits a hard underwaterobstacle to help protect the propeller anddrive mechanism. The propeller will thenspin freely on the shaft. If this happens, the
shear pin must be replaced.
ZMU03663
ZMU01897
Maintenance
65
EMU30660
Removing the propeller
EMU29194
Spline models
1. Straighten the cotter pin and pull it outusing a pair of pliers.
2. Remove the propeller nut, washer, andspacer (if equipped).
3. Remove the propeller and thrust wash-er.
EMU30670
Installing the Propeller
EMU29231
Spline models
CAUTION:
ECM00340
�
Be sure to install the thrust washer be-fore installing the propeller, otherwisethe lower case and propeller bosscould be damaged.
�
Be sure to use a new cotter pin andbend the ends over securely. Otherwisethe propeller could come off during op-
eration and be lost.
1. Apply Yamaha marine grease or a cor-rosion resistant grease to the propellershaft.
2. Install the spacer (if equipped), thrustwasher, and propeller on the propellershaft.
3. Install the spacer (if equipped) and thewasher. Tighten the propeller nut to thespecified torque.
4. Align the propeller nut with the propellershaft hole. Insert a new cotter pin in thehole and bend the cotter pin ends.
NOTE:
If the propeller nut does not align with thepropeller shaft hole after tightening to the
1. Cotter pin2. Propeller nut3. Washer4. Spacer5. Propeller6. Thrust washer
1. Cotter pin2. Propeller nut3. Washer4. Spacer5. Propeller6. Thrust washer
ZMU03228
1
2
3
4
5
6
Maintenance
66
specified torque, tighten the nut further to
align it with the hole.
EMU29282
Changing gear oil
WARNING
EWM00800
�
Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely injured ifthe outboard motor falls on you.
�
Never get under the lower unit while itis tilted, even when the tilt support leveror knob is locked. Severe injury couldoccur if the outboard motor accidental-
ly falls.
1. Tilt the outboard motor so that the gearoil drain screw is at the lowest point pos-sible.
2. Place a suitable container under thegear case.
3. Remove the gear oil drain screw andgasket.
NOTE:
�
If a magnetic gear oil drain screw isequipped, remove all metal particles fromthe screw before installing it.
�
Always use new gaskets. Do not reuse the
removed gaskets.
4. Remove the oil level plug and gasket toallow the oil to drain completely.
CAUTION:
ECM00710
Inspect the used oil after it has beendrained. If the oil is milky, water is gettinginto the gear case which can cause geardamage. Consult a Yamaha dealer for re-
pair of the lower unit seals.
NOTE:
For disposal of used oil, consult your
Yamaha dealer.
5. With the outboard motor in a vertical po-sition, and using a flexible or pressur-ized filling device, inject the gear oil intothe gear oil drain screw hole.
1. Gear oil drain screw2. Oil level plug
ZMU03273
2
1
Recommended gear oil:Hypoid gear oil SAE#90
Gear oil quantity:F50FEHT 430.0 cm
3
(14.54 US oz) (15.17 Imp.oz)F50FET 430.0 cm
3
(14.54 US oz) (15.17 Imp.oz)F60CEHT 430.0 cm
3
(14.54 US oz) (15.17 Imp.oz)F60CET 430.0 cm
3
(14.54 US oz) (15.17 Imp.oz)FT50GET 670.0 cm
3
(22.65 US oz) (23.63 Imp.oz)FT60DET 670.0 cm
3
(22.65 US oz) (23.63 Imp.oz)
Maintenance
67
6. Put a new gasket on the oil level plug.When the oil begins to flow out of the oillevel plug hole, insert and tighten the oillevel plug.
7. Put a new gasket on the gear oil drainscrew. Insert and tighten the gear oildrain screw.
EMU29302
Cleaning fuel tank
WARNING
EWM00920
Gasoline is highly flammable, and its va-pors are flammable and explosive.
�
If you have any question about properlydoing this procedure, consult yourYamaha dealer.
�
Keep away from sparks, cigarettes,flames, or other sources of ignitionwhen cleaning the fuel tank.
�
Remove the fuel tank from the boat be-fore cleaning it. Work only outdoors inan area with good ventilation.
�
Wipe up any spilled fuel immediately.
�
Reassemble the fuel tank carefully. Im-proper assembly can result in a fuelleak, which could result in a fire or ex-plosion hazard.
�
Dispose of old gasoline according to lo-
cal regulations.
1. Empty the fuel tank into an approvedcontainer.
2. Pour a small amount of suitable solventinto the tank. Install the cap and shakethe tank. Drain the solvent completely.
3. Remove the screws holding the fuel jointassembly. Pull the assembly out of thetank.
4. Clean the filter (located on the end of thesuction pipe) in a suitable cleaning sol-vent. Allow the filter to dry.
5. Replace the gasket with a new one. Re-install the fuel joint assembly and tighten
ZMU03274
ZMU03231
ZMU02324
Maintenance
68
the screws firmly.
EMU29312
Inspecting and replacing anode(s)
Yamaha outboard motors are protected fromcorrosion by sacrificial anodes. Inspect theexternal anodes periodically. Remove scalesfrom the surfaces of the anodes. Consult aYamaha dealer for replacement of externalanodes.
CAUTION:
ECM00720
Do not paint anodes, as this would render
them ineffective.
NOTE:
Inspect ground leads attached to externalanodes on equipped models. Consult aYamaha dealer for inspection and replace-ment of internal anodes attached to the pow-
er unit.
EMU29320
Checking battery (for electric start models)
WARNING
EWM00330
Battery electrolytic fluid is dangerous; itcontains sulfuric acid and therefore ispoisonous and highly caustic.Always follow these preventive mea-sures:
�
Avoid bodily contact with electrolyticfluid as it can cause severe burns orpermanent eye injury.
�
Wear protective eye gear when han-dling or working near batteries.
Antidote (EXTERNAL):
�
SKIN - Flush with water.
�
EYES - Flush with water for 15 minutesand get immediate medical attention.
Antidote (INTERNAL):
�
Drink large quantities of water or milkfollowed by milk of magnesia, beatenegg, or vegetable oil. Get immediatemedical attention.
Batteries also generate explosive hydro-gen gas; therefore, you should alwaysfollow these preventive measures:
�
Charge batteries in a well-ventilated ar-ea.
�
Keep batteries away from fire, sparks,or open flames (for example: welding
ZMU04721
ZMU03664
ZMU04722
Maintenance
69
equipment, lighted cigarettes, and soon.)
�
DO NOT SMOKE when charging or han-dling batteries.
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
CAUTION:
ECM00360
�
A poorly maintained battery will quicklydeteriorate.
�
Ordinary tap water contains mineralsharmful to a battery, and should not be
used for topping up.
1. Check the electrolyte level at least oncea month. Fill to the manufacturer’s rec-ommended level when necessary. Topup only with distilled water (or pure de-ionized water suitable to use in batter-ies).
2. Always keep the battery in a good stateof charge. Installing a voltmeter will helpyou monitor your battery. If you will notuse the boat for a month or more, re-move the battery from the boat and storeit in a cool, dark place. Completely re-charge the battery before using it.
3. If the battery will be stored for longerthan a month, check the specific gravityof the fluid at least once a month and re-charge the battery when it is low.
NOTE:
Consult a Yamaha dealer when charging or
re-charging batteries.
EMU29331
Connecting the battery
WARNING
EWM00570
Mount the battery holder securely in adry, well-ventilated, vibration-free loca-tion in the boat. Install a fully charged bat-
tery in the holder.
CAUTION:
ECM01121
�
Make sure the main switch (on applica-ble models) is “ ” (off) before work-ing on the battery.
�
Reversal of the battery cables will dam-age the electrical parts.
�
Connect the red battery cable firstwhen installing the battery and discon-nect the black battery cable first whenremoving it. Otherwise, the electricalparts can be damaged.
�
The electrical contacts of the batteryand cables must be clean and properlyconnected, or the battery will not start
the engine.
Connect the red battery cable to the POSI-TIVE (+) terminal first. Then connect theblack battery cable to the NEGATIVE (-) ter-minal.
Maintenance
70
EMU29370
Disconnecting the battery
Disconnect the BLACK cable from the NEG-ATIVE (-) terminal first. Then disconnect theRED cable from the POSITIVE (+) terminal.
EMU29390
Checking top cowling
Check the fitting of the top cowling by push-ing it with both hands. If it is loose have it re-paired by your Yamaha dealer.
EMU29400
Coating the boat bottom
A clean hull improves boat performance. Theboat bottom should be kept as clean of ma-rine growth as possible. If necessary, theboat bottom can be coated with an anti-foul-ing paint approved for your area to inhibitmarine growth.
Do not use anti-fouling paint which includescopper or graphite. These paints can causemore rapid engine corrosion.
1. Red cable2. Black cable3. Battery
ZMU01943
71
Trouble Recovery
EMU29424
Troubleshooting
A problem in the fuel, compression, or igni-tion systems can cause poor starting, loss ofpower, or other problems. This section de-scribes basic checks and possible remedies,and covers all Yamaha outboard motors.Therefore some items may not apply to yourmodel.If your outboard motor requires repair, bringit to your Yamaha dealer.If the engine trouble warning indicator isflashing, consult your Yamaha dealer.
Starter will not operate.
Q. Is battery capacity weak or low?A. Check battery condition. Use battery ofrecommended capacity.
Q. Are battery connections loose or corrod-ed?A. Tighten battery cables and clean batteryterminals.
Q. Is fuse for electric start relay or electric cir-cuit blown?A. Check for cause of electric overload andrepair. Replace fuse with one of correct am-perage.
Q. Are starter components faulty?A. Have serviced by a Yamaha dealer.
Q. Is shift lever in gear?A. Shift to neutral.
Engine will not start (starter operates).
Q. Is fuel tank empty?A. Fill tank with clean, fresh fuel.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?A. Clean or replace filter.
Q. Is starting procedure incorrect?A. See page 35.
Q. Has fuel pump malfunctioned?A. Have serviced by a Yamaha dealer.
Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.
Q. Are spark plug cap(s) fitted incorrectly?A. Check and re-fit cap(s).
Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tightenall loose connections. Replace worn or bro-ken wires.
Q. Are ignition parts faulty?A. Have serviced by a Yamaha dealer.
Q. Is engine stop switch lanyard not at-tached?A. Attach lanyard.
Q. Are engine inner parts damaged?A. Have serviced by a Yamaha dealer.
Engine idles irregularly or stalls.
Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.
Trouble Recovery
72
Q. Is fuel system obstructed?A. Check for pinched or kinked fuel line orother obstructions in fuel system.
Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?A. Clean or replace filter.
Q. Have ignition parts failed?A. Have serviced by a Yamaha dealer.
Q. Has warning system activated?A. Find and correct cause of warning.
Q. Is spark plug gap incorrect?A. Inspect and adjust as specified.
Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tightenall loose connections. Replace worn or bro-ken wires.
Q. Is specified engine oil not being used?A. Check and replace oil as specified.
Q. Is thermostat faulty or clogged?A. Have serviced by a Yamaha dealer.
Q. Are carburetor adjustments incorrect?A. Have serviced by a Yamaha dealer.
Q. Is fuel pump damaged?A. Have serviced by a Yamaha dealer.
Q. Is air vent screw on fuel tank closed?A. Open air vent screw.
Q. Is choke knob pulled out?
A. Return to home position.
Q. Is motor angle too high?A. Return to normal operating position. Q. Is carburetor clogged?A. Have serviced by a Yamaha dealer.
Q. Is fuel joint connection incorrect?A. Connect correctly.
Q. Is throttle valve adjustment incorrect?A. Have serviced by a Yamaha dealer.
Q. Is battery cable disconnected?A. Connect securely.
Warning buzzer sounds or indicatorlights.
Q. Is cooling system clogged?A. Check water intake for restriction.
Q. Is engine oil level low?A. Fill oil tank with specified engine oil.
Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.
Q. Is specified engine oil not being used?A. Check and replace oil with specified type.
Q. Is engine oil contaminated or deteriorat-ed?A. Replace oil with fresh, specified type.
Q. Is oil filter clogged?A. Have serviced by a Yamaha dealer.
Q. Has oil feed/injection pump malfunc-tioned?
Trouble Recovery
73
A. Have serviced by a Yamaha dealer.
Q. Is load on boat improperly distributed?A. Distribute load to place boat on an evenplane.
Q. Is water pump or thermostat faulty?A. Have serviced by a Yamaha dealer.
Q. Is there excess water in fuel filter cup?A. Drain filter cup.
Engine power loss.
Q. Is propeller damaged?A. Have propeller repaired or replaced.
Q. Is propeller pitch or diameter incorrect?A. Install correct propeller to operate out-board at its recommended speed (r/min)range.
Q. Is trim angle incorrect?A. Adjust trim angle to achieve most efficientoperation.
Q. Is motor mounted at incorrect height ontransom?A. Have motor adjusted to proper transomheight.
Q. Has warning system activated?A. Find and correct cause of warning.
Q. Is boat bottom fouled with marine growth?A. Clean boat bottom.
Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.
Q. Are weeds or other foreign matter tangledon gear housing?A. Remove foreign matter and clean lowerunit.
Q. Is fuel system obstructed?A. Check for pinched or kinked fuel line orother obstructions in fuel system.
Q. Is fuel filter clogged?A. Clean or replace filter.
Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.
Q. Is spark plug gap incorrect?A. Inspect and adjust as specified.
Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tightenall loose connections. Replace worn or bro-ken wires.
Q. Have electrical parts failed?A. Have serviced by a Yamaha dealer.
Q. Is specified fuel not being used?A. Replace fuel with specified type.
Q. Is specified engine oil not being used?A. Check and replace oil with specified type.
Q. Is thermostat faulty or clogged?A. Have serviced by a Yamaha dealer.
Q. Is air vent screw closed?A. Open the air vent screw.
Q. Is fuel pump damaged?A. Have serviced by a Yamaha dealer.
Trouble Recovery
74
Q. Is fuel joint connection incorrect?A. Connect correctly.
Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.
Q. Is high pressure fuel pump drive belt bro-ken?A. Have serviced by a Yamaha dealer.
Q. Is engine not responding properly to shiftlever position?A. Have serviced by a Yamaha dealer.
Engine vibrates excessively.
Q. Is propeller damaged?A. Have propeller repaired or replaced.
Q. Is propeller shaft damaged?A. Have serviced by a Yamaha dealer.
Q. Are weeds or other foreign matter tangledon propeller?A. Remove and clean propeller.
Q. Is motor mounting bolt loose?A. Tighten bolt.
Q. Is steering pivot loose or damaged?A. Tighten or have serviced by a Yamahadealer.
EMU29433
Temporary action in emergency
EMU29440
Impact damage
WARNING
EWM00870
The outboard motor can be seriously
damaged by a collision while operating ortrailering. Damage could make the out-
board motor unsafe to operate.
If the outboard motor hits an object in the wa-ter, follow the procedure below.
1. Stop the engine immediately.2. Inspect the control system and all com-
ponents for damage. Also inspect theboat for damage.
3. Whether damage is found or not, returnto the nearest harbor slowly and careful-ly.
4. Have a Yamaha dealer inspect the out-board motor before operating it again.
EMU30680
Replacing fuse
If a fuse has blown, open the fuse holder andremove the fuse with a fuse puller. Replaceit with a spare one of the proper amperage.
WARNING
EWM00630
Be sure to use the specified fuse. An in-correct fuse or a piece of wire could allowexcessive current flow. This could cause
electric system damage and a fire hazard.
NOTE:
Consult your Yamaha dealer if the new fuse
immediately blows again.
Trouble Recovery
75
EMU29522
Power trim and tilt / power tilt will not operate
If the engine cannot be tilted up or down withthe power trim and tilt / the power tilt becauseof a discharged battery or a failure with thepower trim and tilt unit / the power tilt unit, theengine can be tilted manually.1. Loosen the manual valve screw by turn-
ing it counterclockwise until it stops.
2. Put the engine in the desired position,then tighten the manual valve screw byturning it clockwise.
EMU31601
Water separator warning indicator blinks while cruising
WARNING
EWM01500
Gasoline is highly flammable, and its va-pors are flammable and explosive.
�
Do not perform this procedure on a hotor running engine. Allow the engine tocool.
�
There will be fuel in the fuel filter. Keepaway from sparks, cigarettes, flames orother sources of ignition.
�
This procedure will allow some fuel tospill. Catch fuel in a rag. Wipe up anyspilled fuel immediately.
�
The fuel filter must be reassembledcarefully with the O-ring, filter cup, andhoses in place. Improper assembly orreplacement could result in a fuel leak,which could result in a fire or explosion
hazard.
If the water separator warning indicator onthe tachometer blinks, perform the followingprocedure.
1. Fuse (20 A
×
3, 30 A
×
1)2. Spare fuse (20 A
×
3, 30 A
×
1)3. Fuse puller
3
2
1
12
ZMU05099
1. Manual valve screw
1
ZMU03668
Trouble Recovery
76
1. Stop the engine.2. Remove the top cowling.3. Remove the plastic tie.
4. Disconnect the water detection switchcoupler.
CAUTION:
ECM01570
Be careful not to get any water on the wa-ter detection switch coupler, otherwise a
malfunction could occur.
5. Unscrew the filter cup from the filterhousing.
NOTE:
Be careful not to twist the water detection
switch lead when unscrewing the filter cup.
6. Drain the water in the filter cup by soak-ing it up with a rag.
NOTE:
Properly dispose of the rag.
7. Firmly screw the filter cup onto the filterhousing.
NOTE:
Be careful not to twist the water detectionswitch lead when screwing the filter cup onto
1. Water separator warning indicator
1. Plastic tie
1
ZMU05475
1. Water detection switch coupler
1. Filter cup2. Water detection switch lead
1
ZMU05476
1
2
ZMU05477
Trouble Recovery
77
the filter housing.
8. Connect the water detection switch cou-pler securely until a click is heard.
9. Fasten the water detection switch leadwith the plastic tie.
10. Install the top cowling.11. Start the engine and make sure that the
water separator warning indicator re-mains off.
NOTE:
Have a Yamaha dealer inspect the outboard
motor after returning to port.
EMU29541
Starter will not operate
If the starter mechanism does not operate(the engine cannot be cranked with the start-
er), the engine can be started manually withan emergency starter rope. However, the en-gine cannot be started manually if the batteryvoltage is low. If the battery is discharged to9 volts or below, the electric fuel pump willnot operate.
WARNING
EWM01021
�
Use this procedure only in an emergen-cy to return to the nearest port for re-pairs.
�
When the emergency starter rope isused to start the engine, the start-in-gear protection device does not oper-ate. Make sure the remote control leveris in neutral. Otherwise the boat couldunexpectedly start to move, whichcould result in an accident.
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating theboat.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route thecord where it could become entangled,preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in theboat to be thrown forward.
�
Make sure no one is standing behindyou when pulling the starter rope. Itcould whip behind you and injuresomeone.
�
An unguarded, rotating flywheel is verydangerous. Keep loose clothing andother objects away when starting theengine. Use the emergency starter rope
1. Water detection switch coupler
1. Plastic tie
1
ZMU05509
1
ZMU05475
Trouble Recovery
78
only as instructed. Do not touch the fly-wheel or other moving parts when theengine is running. Do not install thestarter mechanism or top cowling afterthe engine is running.
�
Do not touch the ignition coil, sparkplug wire, spark plug cap, or other elec-trical components when starting or op-erating the motor. You could get an
electrical shock.
EMU29581
Emergency starting engine
1. Remove the top cowling.2. Remove the flywheel cover.
3. Prepare the engine for starting. For fur-ther information, see page 35. Be surethe engine is in neutral and that the en-gine stop switch lanyard lock plate is at-tached to the engine stop switch.
4. Turn on the main switch.
5. Insert the knotted end of the emergencystarter rope into the notch in the flywheelrotor and wind the rope around the fly-wheel several turns clockwise.
6. Give a strong pull straight out to crankthe engine. Repeat if necessary.
WARNING
EWM00620
Do not install the top cowling when en-
ZMU03670
ZMU04595
ON STARTOFF
ZMU01906
Trouble Recovery
79
gine is running.
EMU29760
Treatment of submerged motor
If the outboard motor is submerged, immedi-ately take it to a Yamaha dealer. Otherwisesome corrosion may begin almost immedi-ately.If you cannot immediately take the outboardmotor to a Yamaha dealer, follow the proce-dure below in order to minimize engine dam-age.
EMU29790
Procedure
1. Thoroughly wash away mud, salt, sea-weed, and so on, with fresh water.
2. Remove the spark plugs and face thespark plug holes downward to allow anywater, mud, or contaminants to drain.
3. Drain the fuel from the vapor separator,fuel filter, and fuel line.
4. Feed fogging oil or engine oil throughthe intake manifold and spark plug holeswhile cranking with the emergency start-er rope.
5. Take the outboard motor to a Yamahadealer as soon as possible.
CAUTION:
ECM00400
Do not attempt to run the outboard motor
until it has been completely inspected.
ZMU03671
YAMAHA MOTOR CO., LTD.
Printed on recycled paperPrinted in JapanApril 2006–0.3
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