21" Walk Behind Mower

Parts Manual

Mfg. No. DescriptionModels

7800816 CXT21675. 21" 6.75GT Champion (2011)

Revision -Manual Part No. 1752948

Rev. Date: 5/19/2011

Table Of Contents

Torque Specification Chart ..................................................................... Inside Back Cover

PRODUCT COMPONENTS PAGESHandle Assembly Group ......................................................................................................................................

Engine & Blade Group ......................................................................................................................................... 6Transmission Group ............................................................................................................................................. 8Wheels & Height-of-Cut Group ............................................................................................................................ 10Decals Group ....................................................................................................................................................... 12Mower Deck Group .............................................................................................................................................. 14

Handle Assembly GroupNOTE: Unless noted otherwise, use the standard hardware torque specification chart.

7502112

The above parts group applies to the following Mfg. Nos.:

42011Milwaukee, WI, USA. All rights reserved© Copyright by Briggs & Stratton Corporation

7800816 - CXT21675. 21" 6.75GT Champion (2011)

1752948

PART NO. DESCRIPTIONREF NO QTY.

Footnotes

WIRE TIE, 11 Inch Std Black Nylon 0010 7024649YP 3GUIDE, ROPE (1/4-20 thread) 0020 7028488MA 1KNOB, Wing, 5/16-18 0030 7035744YP 4

NUT, Hex Lock, 1/4-20 0040 7076978SM 1WASHER, 5/16" Internal Tooth Lock 0050 7090391SM 4BOLT, Carriage, Curved Head, 5/16-18 x 2 0060 7091189YP 2

BOLT, Carriage, Short Neck, 5/16-18 x 3/4, G5 0070 7091508SM 6NUT, Hex Flange Centerlock, 5/16-18 0080 7091601SM 6

SCREW, Torxplus Recessed Pan Head, Twin Helix, #8-16 0090 7100225YP 4CABLE, Bail, 21" 0100 7101399YP 1BAIL, Operator Presence Control 0110 7101731AMA 1

ASSEMBLY, Control Head, Single Speed (Incl. Ref. 0120-10) 0120 7101892MA 1CABLE, Drive (Included with Ref. No. 0120) 0120-10 7101398YP 1LOWER HANDLE BRACKET, LH 0130 7300573AYP 1

LOWER HANDLE BRACKET, RH 0140 7300574AYP 1HANDLE, Lower, 21” Rear Discharge 0150 7300592AMA 1HANDLE, Upper, Brute, Propelled 0160 7300676AMA 1

PLATE, Control Panel 0170 7300130AMA 1BOLT, Carriage, Short Neck, 5/16-18 x 1-1/2, G5 0180 1931337SM 2

5 1752948

Engine & Blade Group7502393

6 1752948

WASHER, Cone 0010 7012063SM 1SCREW, Hex Head Cap, 3/8-24 x 2, G5 0020 7090167SM 1SCREW, 3/8-16 x 1" Hex Washer Self-Tap 0030 7090324SM 3

KEY, Hi-Pro, #605 0040 7091214YP 1NUT, 1/4-20 Hex Flange Lock, YZ 0050 7091584SM 4SET SCREW, Hex Recess, 5/16-18 x 1/2 0060 7092086YP 1

BLADE, Wave, 21" Steel Deck 0070 7100242AYP 1PULLEY, Engine 0080 7100437YP 1

BELT GUIDE, Engine, 21" RD (1/4-20 thread) 0090 7101313YP 2BLADE HUB, 21" WBM, Rear Discharge, 2 Position 0100 7101414YP 1COVER, Belt Guard 0110 7300596YP 1

COVER, Belt 0120 7300724YP 1BELT GUARD 0130 7300725YP 1* ENGINE, 675 Series Briggs & Stratton 0140 126T02-0268-B1 1

SCREW, Pan Head, Self Tap, Torx, 1/4-20 x 1/2 0150 7900067YP 2SCREW, AB, w/Washer, #10-16 x 1/2 0170 26X259MA 6

Note: * Purchase engine parts from engine manufacturer dealer.

7 1752948

7501852

8 1752948

TRANSMISSION, 21" WBM, RD 1 7101245YP 1PULLEY, Trans Var Speed, LC WBM 3 7100240YP 1NUT, 3/8-16 Hex Center Lock, YZ 4 7091585SM 1

BELT, Traction Drive, 21" Pivot Handle Section 3L, 32.86 effective length 5 7100883YP 1BELT GUIDE, Transmission 6 7100863YP 1SCREW, Pan Head Self Tap, #10-16 x 3/4 7 7091195SM 2

PIN, Axle 8 7100861YP 2

9 1752948

Wheels & Height-of-Cut Group7502395

10 1752948

RING, External Retaining 0010 7014341YP 2NUT, Nylock, 10 x 24 0020 7091290SM 2WASHER, Flat, 7/32 0030 7091552SM 2

NUT, Center Lock Hex, 3/8-16, GR 5 0040 7091585SM 4GEAR, Pinion 0050 7100820YP 2BUSHING, Front 21" 0060 7101241YP 4

HUBCAP, Round, Black 0070 7101351MA 4SHIELD, Dust 0080 7101367YP 2

BOLT, Shoulder, 1/4 x 3/8 0090 7101774YP 2CROSSBAR, Rear 0100 7400275YP 1CROSSBAR, Front 0110 7400276YP 1

WHEEL, 8” x 2” Idle, w/Db Tread, Brute Yellow 0120 7101712MA 2WHEEL ASSEMBLY, 9" x 2" Drive, w/External Gear (Incl. Ref. No. 0300) 0130 7500689MA 2SCREW, Hex Washer Self-Tap, Hi-Lo, #8 x 1-1/4 0130-10 7091196SM 6

GEAR, External Wheel 0130-20 7100914YP 2SCREW, Pan Head, Self Tap, Torx, 1/4-20 x 1/2 0140 7900067YP 6WASHER, Flat, 3/8 0150 17X169MA 4

GRIP, Height Adjust 0160 671297MA 1LEVER, Spring, Height-Of-Cut 0170 672278MA 1ROD, Lifter Link 0180 7101430ZYP 1

RING, Retaining 0190 7027999YP 2

BEARING, Ball, 1-1/8 OD, Flange (Included with Ref. No. 0130)(Not Illustrated) 0300 7101380YP 2

11 1752948

Decals Group7502397

12 1752948

Decals Group

DECAL, OPC BAIL INT'L SYMBOL 0010 7029782MA 1DECAL, WARNING, EURO, MULTI-PANEL 0020 7101084YP 1LABEL, CHAMPION 0040 884268YP 1

DECAL, CONTROL, CHAMP VS, EURO 0060 7104888YP 1DECAL, Engine 675 0100 7104178YP 1

13 1752948

Mower Deck Group7502396

14 1752948

Mower Deck Group

PUSHNUT, 1/4" 0010 7091020YP 4SCREW, Self Tap, SEMS, #10-24 x 1/2 0020 7091286YP 8NUT, Hex Lock, Nylon, #10C 0030 7091290SM 3

SCREW, Hex Head Cap, 5/16-18 x 3/4, G5 0040 7091318SM 4BOLT, Carriage, Short Neck, 5/16-18 x 3/4, G5 0050 7091508SM 6NUT, Hex Flange, 5/16-18, GR 5 0060 7091601SM 6

BOLT, Flat Head Square Neck, #10-24 x 5/8 0070 7091711YP 3ROD, Rear Door Pivot, 21" Rear Discharge 0080 7101314YP 1

SPRING, Extension, Height-Of-Cut Assist 0090 7101434YP 1COVER, 21" Mulching 0100 7101437YP 1ROD, Mulch Cover Pivot 0110 7101471YP 1

CHUTE, 21" Side Discharge 0120 7101490YP 1BAFFLE, Extension, 21" RD WBM 0130 7101502YP 1DEFLECTOR, Rear, 21" WBM, RD 0140 7101553YP 1

HOLDER, Bearing Assembly 21", RD (Incl. Ref. No. 0220-10) 0220 7500558YP 2BALL BEARING, Axle (Included with Ref. No. 0220) 0220-10 7078243YP 2SCREW, Pan Head, Self Tap, Torx, 1/4-20 x 1/2 0230 7900067YP 18

SPACER, Rear Door, 21" WBM 0240 071410MA 1SPRING, Torsion 0250 166X33MA 1SPRING, Torsion, Chute 0260 166X38MA 1

DOOR, 21" Black 0270 071409MA 1

BAFFLE, Front, 21" WBM, RD 0280 7300585ZMA 1INDEX PLATE, Height-Of-Cut 0290 7300587ZYP 1

BAFFLE, Left Rear, 21" WBM, RD 0300 7300589ZMA 1

BRACKET, Chute Deflector 0310 7300590ZMA 1BAFFLE, Rjght Rear, 21" WBM, RD 0320 7300591ZMA 1

TRANSMISSION COVER, 21" WBM, RD 0330 7300723ZMA 1

DECK, 21" RD 0340 7301050ZYP 1NUT, #10-24 Hex Center Lock 0350 7091267SM 3

BAFFLE EXTENSION, 21" RD 0370 7301009ZYP 1

GRASSBAG, 21" Rear Discharge 0500 7101304YP 1BAG FRAME, 21" RD WBM 0510 7101303AYP 1

PLUG, Mulching 0520 071250MA 1

15 1752948

in/lbsft/lbs

3

Torque Specification ChartFOR STANDARD METRIC MACHINE HARDWARE (Tolerance ± 20%)

PropertyClass

Class 8.8 Class 10.9 Class 12.9

Size OfHardware Nm. Nm. Nm. Nm.

M3 1.282.905.75

9.916.5

244883

132200275390530375995

1350183023603050

13.44 1.804.108.10

14233467

117185285390550745960

14001900258033104290

19.2 22.92 2.15M4 30.72 43.44 52.56 4.95M5 60.96 5.97 7.15

16.59.7

M6 7.3 10.3 12.1M7 12.1 16.9 19.9 27M8 17.7 25 29 40M10 35 50 59 81M12 61 86.2 103 140M14 101 136 162 220M16 147 210 250 340M18 202 287 346 470M20 290 405 486 660M22 390 559 656 890M24 497 708 840 1140M27 733 1032 1239 1680M30 995 1401 1681 2280M33 1349 1902 2278 3090M36 1740 2441

37982935 3980

M39 2249 3163

Torque Specification ChartFOR STANDARD MACHINE HARDWARE (Tolerance ± 20%)

HardwareGrade

SAE Grade 2 SAE Grade 5 SAE Grade 8

Size Ofin/lbsft/lbs

in/lbsft/lbs

in/lbsft/lbs

in/lbs in/lbsHardware ft/lbs Nm. ft/lbs Nm. ft/lbs Nm.

8-32 19 2.1 30 3.4 41 4.68-36 20 2.3 31 3.5 43 4.910-24 27 3.1 43 4.9 60 6.810-32 31 3.5 49 5.5 68 7.71/4-20 66 7.6 8 10.9 12 16.31/4-28 76 8.6 10 13.6 14 19.05/16-18 11 15.0 17 23.1 25 34.05/16-24 12 16.3 19 25.8 29 34.03/8-16 20 27.2 30 40.8 45 61.23/8-24 23 31.3 35 47.6 50 68.07/16-14 30 40.8 50 68.0 70 95.27/16-20 35 47.6 55 74.8 80 108.81/2-13 50 68.0 75 102.0 110 149.61/2-20 55 74.8 90 122.4 120 163.29/16-12 65 88.4 110 149.6 150 204.09/16-18 75 102.0 120 163.2 170 231.25/8-11 90 122.4 150 204.0 220 299.25/8-18 100 136 180 244.8 240 326.43/4-10 160 217.6 260 353.6 386 525.03/4-16 180 244.8 300 408.0 420 571.27/8-9 140 190.4 400 544.0 600 816.07/8-14 155 210.8 440 598.4 660 897.61-8 220 299.2 580 788.8 900 1,244.01-12 240 326.4 640 870.4 1,000 1,360.0

Hex Head Capscrew

Hex Nut

Lockwasher

Washer

Carriage Bolt

NOTES1. These torque values are to be used for all hardware

excluding: locknuts, self-tapping screws, thread formingscrews, sheet metal screws and socket head setscrews.

2. Recommended seating torque values for locknuts:a. for prevailing torque locknuts - use 65% of grade 5

torques.b. for flange whizlock nuts and screws - use 135% of

grade 5 torques.3. Unless otherwise noted on assembly drawings, all torque

values must meet this specification.

Hardware Identification & Torque Specifications

Common Hardware Types

NoMarks

The guides and ruler furnished below are designed tohelp you select the appropriate hardware.

8.8 10.9 12.9

Class 5.6

5.6

5150

13.44 1.285.88

26.4 2.5044.64 4.3

5.2 7.17.7 10.515 21

988 1340759 1030590 800435 590320 435217 295169 230126 17189 12164 8842 5826 36

.56

ThreadDiameter (mm)

Screw, 1/2- 16 x 2

BodyDiameter

Diameter

InsideDiameter (in)

Nut, 1/2-16

01/4 3/41/2 21

1/4 3/41/2 1/4 3/41/2 1/4 3/41/2 4

90 10070 8050 6030 400 10 20

ThreadDiameter (mm)

Nut, M8 Screw, M8- 1.25 x 25

Distance between threads (mm)

BodyLength (in)

BodyLength (mm)

3/8” Bolt or NutWrench—9/16”

5/16” Bolt or NutWrench—1/2”

1/4” Bolt or NutWrench—7/16”

1/2” Bolt or NutWrench—3/4”

7/16” Bolt or NutWrench (Bolt)—5/8”Wrench (Nut)—11/16”

in/lbs

Threads per inch

Threads per inch

Body Length

Body

When a washer or nut is identified as 1/2” (M8), this is the Nominal size, meaning the inside diameter is 1/2 inch (8mm metric thread diameter); if a second number is presentit represents the threads per inch (distance between threads).

When bolt or capscrew is identified as 1/2 - 16 x 2” (M8 - 1.25 x 50 ),this means the Nominal size, or body diameter is 1/2 inch (8mmmetric thread diameter), the second number,16, represents the threads per inch, (1.25 thread diameter). The final number is the body length of the bolt or screw, 2 inches (50mm).

Standard Hardware Sizing

M6 Bolt or NutWrench—10mm

M8 Bolt or NutWrench—13mm

M10 Bolt or NutWrench—17mm

M12 Bolt or NutWrench—19mm

M14 Bolt or NutWrench—22 mm

Wrench & Fastener Size Guide

12301 W. Wirth StreetWauwatosa, WI, 53222 USA

www.murray.com

Briggs & Stratton Power Products Group

IT IS THE POLICY OF BRIGGS & STRATTON CORP. TO IMPROVE ITS PRODUCTS WHENEVER IT IS POSSIBLE AND PRACTICAL TO DO SO. WE RESERVE THE RIGHT TO MAKE CHANGES OR ADD IMPROVEMENTS AT ANY TIME WITHOUT INCURRING ANY

OBLIGATION TO MAKE SUCH CHANGES ON PRODUCTS.