64
,#A Replacement parts list 1971 zs$cmt models "::6.aj,!?,1ff'' www.bsaunitsingles.com

1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

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Page 1: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

,#A

Replacement parts list1971

zs$cmt models "::6.aj,!?,1ff''

www.bsaunitsingles.com

Page 2: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

,gA

Replacement parts list

250cm'models

B25SS Gold

B25SS Gold

ts25T Victor

Star 250 Street Scramhler

Star 250 Street Scramhler(Home and General Export)

250 Trail

CommencingEngine andFrame numbers

JE.00101 B25SS

JE.00101 B25T

B.S.A. Motor Cycles LimitedRegistered Off ice and Works:Armoury Road, Birmingham B112PX.Telephone: 021 -772 2381 . Telex: 333"15Telegrams and Cables:"Selmoto" Birmingham

lssued byB.S.A. Motor Cycles LimitedSpares Department,Montgomery Streei,tsirmingham 811 1DZ.Telephone: A21 -772 0559/0537Te leg rams: "Selmoto " B irm ingham

1971 PublicationRef. 00-5720

Printed in Englandby B.S.A. Presswww.bsaunitsingles.com

Page 3: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

MODEL ABBREVIATIONS:

T TRAILSS STREET SCRAMBLERH STREET SCRAMBLER (Home and general export)

SUFFIX NUMBERS TO BE USED TO IDENTIFY VARYING FINISHES

When ordering components with varying finishes, please state finish required by adding the appropriatenumber to part number. Example :- Front mudguard 07-40521293

PETROL TANK:Polished alloy sides, black centre stripe, black side stripe, red liningFlamboyant blueFlamboyant red, black

MUDGUARDS:

centre stripe, black side stripe, red lining

Flamboyant red, black centre stripeFlamboyant blue, rvhite centre stripe

SIDECOVERS:

l29t1227

l28s

293

1286

l170t771

/003l0o7

It6s1288

Flamboyant redFlamboyant blue

OTHER PARTS:

ChrorneBlackSilverGrey

PRICES:

No price codes are quoted in this list. For prices please refer to the latest edition of the Master PriceList No. 00-5125.

Where neoessary details of thread form and size are quoted after description of nuts, bolts, screws,studs and washers. Such as: l4-7A05 Socket sarew (yt" uN.c x l") : lTo" diameter urrified coarse thread1" long under head.

Vital components, which are manufactnred from special rrraterial, are indicated by a sign and the BritishStandard symbol for the material is quoted at the foot of the page.

B.A.B.S.C.B,S.F.w.F.UN.FUN.CU.N.S

ABBREVIATIONS:

British Association screw threads.British Standard Cycle screw threads.British Standard Fine screw threads.Whitworth Form screw threads.Unified Fine screw threads.Unified Coarse screw threads.Unified Special screw threads

-)

www.bsaunitsingles.com

Page 4: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

CARBURETTERS

AMAL LIMITED, HOLDFORD ROAD, WITTON, BIRMINGHAM 6.

CHAINS

RENOLDS LIMITED, WYTHENSHAWE, MANCHESTER'

ELECTRICAL EQUIPMENT

J.LUCASLIMITED,GREATHAMPTONSTREET,BIRMINGHAM18'

SPEEDOMETERS

SMITH'S INDUSTRIES LIMITED, MOTOR ACCESSORY DIVISION, 50 OXGATE LANE,

CRICKLEWOOD, LONDON N.W.2.

TYRES

DUNLOP COMPANY LIMITE,D, FORT DUNLOP, BIRMINGHAM 24.

SPARKING PLUGS

CHAMPION SPARKING PLUG COMPANY LIMITED, FELTHAM, MIDDLESEX.

SHOCK ABSORBERS

GIRLING LIMITED, BIRMINGHAM ROAD, WEST BROMWICH, STAFFORDSHIRE.

BRAKES (LOCKHEED)

AUTOMOTIVE PRODUCTS CO. LIMITED, P.O. BOX 14, SOUTHAM ROAD, BANBURY'

OXFORDSHIRE.

OIL FILTERS

BRITISH FILTERS LIMITED, COX GREEN, MAIDENHEAD, BERKSHIRE'

www.bsaunitsingles.com

Page 5: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

ASSEMBLIES COMPLETE

Spares No. Description

00-7009

00-3168

00-3310

71-1861

7t-2235

71-1869

7t-2227

7t-2284

57-4197

83-2985

974113

37-3791

37-3889

37-3792

37-3890

37-3793

37-3735

37-3848

37-3780

37-3781

37-3907

00-5220

t9-2432

LOCTITE PLASTIC GASKET (10 bottle trade pack).

TOP OVERHAUL GASKET SET.

FULL OVERHAUL GASKET SET.

ENGINE UNIT, LESS CARBURETTER AND EXHAUST SYSTEM (TTAiI).

ENGINE UNIT, LESS CARBURETTER AND EXHAUST SYSTEM (ROAd, StTCCt SCTAMbIETI

CRANKCASE COMPLETE WITH FIXED FITTINGS.

OIL PUMP COMPLETE.

CRANKSHAFT AND FLYWHEEL ASSEMBLY.

CLUTCH ASSEMBLY COMPLETE.

FRAME COMPLETE (Trail, Street Scrambler).

FRONT FORK COMPLETE.

FRONT WHEEL LESS BRAKE DETAILS (Trail) 6".

FRONT WHEEL LESS BRAKE DETAILS (Street Scrambler) 6"

FRONT WHEEL WITH BRAKE DETAILS (Trail) 6".

FRONT WHEEL WITH BRAKE DETAILS (Street Scrambler) 6".

FRONT HUB WITH SPINDLE AND BEARINGS (Trail and Street Scrambler) 6".

FRONT WHEEL LESS BRAKE DETAILS (Street Scrambler) 8".

FRONT HUB WITH SPINDLE AND BEARINGS (Street Scrambler) 8".

REAR WHEEL COMPLETE WITH BRAKE DETAILS (Trail).

REAR WHEEL COMPLETE WITH BRAKE DETAILS (Street Scrambler).

REAR HUB WITH SPINDLE AND BEARINGS.

TACHOMETER KIT (60 mm.)'

CARBURETTER COMPLETE

www.bsaunitsingles.com

Page 6: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

PISTONS COMPLETE

CompressionRatio Standard .y:: I *r mm

9.5 to 1 7l-1801 1r--1802 | zt-rao:

8.5 to 1 7t-1953 lt-tssl I tt-rnrt

COMPRESSION RINGS

,oo uno ".nFl *o ""*.** i t* ""*""*(taper) | (,up.r) (taper)70-6838170-9017170-9018_r_r_

SCRAPER RINGS

-ro-os:erru*urru*u

PTSTON CHART

CARBURETTER

I

t

r

SparesNumber

MakersNumber

MainJet

ThrottleSlide

NeedleJet

NeedlePosition

t9-2432 R.928120 200 3Vz .106 I

I

www.bsaunitsingles.com

Page 7: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

PIate

Plate

Plate

Plate

PIate

PIate

PIate

Plate

Plate

Plate

Plate

Plate

PIate

Plate

Plate

Plate

Plate

1

t

3

4

5

6

7

8

9

10

11

12

t3

l4

INDEX

STEERING LOCK AND KEY

ASSEMBLIES COMPLETE

PISTON CHART

CARBURETTER

CYLINDER - CRANKSHAFT

CRANKCASE

GEAR CLUSTER

CLUTCH

FRAME - BATTERY CARRIER - TOOL TRAY - ENGINE SHIELD

SWINGING ARM - REAR SUSPENSION - CHAINGUARD

REAR BRAKE CONTROL - FOOTREST - SILENCER

AIR CLEANER - SIDECOVERS - OIL PIPES

FRONT FORK

FRONT WHEEL

FRONT WHEEL - BRAKE

REAR WHEEL - CHAINGUIDE

MUDGUARDS - HANDRAIL

PETROL TANK - TWINSEAT - CONTROLS

ELECTRICAL EQUIPMENT

TOOLS

CARBURETTER

Page

2

5

6

6

8-11

12-17

18-23

24-25

26-27

28-29

30-31

32-33

34-37

38-39

40-41

42-43

44-45

46-49

50-55

5b - 5/

58-59

15

16

17

www.bsaunitsingles.com

Page 8: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 1

\*

)[]\

Wll@lrIll

4l40.

www.bsaunitsingles.com

Page 9: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate ICYLINDER AND CRANKSI{AFT

l'

1

L

ModelSpares

NumberPerSet

PlateRef. Description

T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T"SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H"T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T,SS,H.T.SS.H.T.SS.H.

1. 19-76252. t9-76063. t4-03024. 60-23305. t4-13026. 7t-21967. 14-04038. 02-2t389. 1t-2226

10. 70-777711. 40-015712. 70-'r79t13. 40-015814. 70-778715. 7t 1425t6 40-096517. 40-096618. 70-779019. t4-162920. 68 5197

21. 24-516022. ',t6-0012

23. 40,002024. 1l-217625. 7t-223326. 70-6838127. 70-6839128. 71-1801129. 70-686130. 70-686931. 2t-201632. 4l-056033. 7t-228434. 40-006434. 40-006534. 40-006634. 40-006935. 24-073236. 40-1031*

Spark plug coverSpark plug (Champion N3)Nut-rocker box to head (S" uN.r.)Washer-rocker box to head (#" x *" x ie")Nut-rocker box to head (fi" uN.r.)Rocker boxNut-rocker spindle ($" u.N.r.)Washer-rocker spindle nut (f" x1"x#")Exhaust valve guideExhaust valveThrust washer-rocker spindle (*' I/D)Exhaust rockerThrust washer-rocker spindle (+" IID)Rocker spindleGasket-inspection coverScrew-inspection cover ($" n.s.cInspection cover-rocker box . .

Inlet rockerStud-cylinder head ($" u.N.c./u.N.r. x 3]")Sealing washer-rocker boxNut-cylinder head (S" n.s.c.)Washer-cylinder head nut (21164" x k" * *")Stud-cylinder head (fr" n.s.c./n.s.F.) . .

Exhaust pipeCylinder base gasket

Piston ring (taper)Piston ring (scraper)

Piston completeGudgeon pinCirclip-gudgeon pin 2

2

2

9

1

2

2

22

Nut-connecting rod bolt (+"Key-crankshaft pinionCrankshaft and flywheel assemblyShim-crankshaft (.003") .0762 mm.Shim-crankshaft (.005") .127 mm.Shim-crankshaft (.010") .254 mm.

x I l/16")

. . as reqd.

.. as reqd.

.. as reqd.

22

2

Shim-crankshaft (.015") .381 mm. .. as reqd.Bearing-crankshaft right side (Hoffmann 325)Bolt-flywheel ($" u.N.r'. x 2")

www.bsaunitsingles.com

Page 10: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate l-Continued

_40krT

,*---7h

wl1\li)l,t .l J.

10

www.bsaunitsingles.com

Page 11: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 1-ContinuedCYLINDER AND CRANKSHAFT

Plate SparesModel Ref. Number Description

PerSet

T.SS.H. 37.T.SS.H. 38.T.SS.H. 39.T.SS.H. 40.T.SS.H. 4I.T.SS.H. 42.T.SS.H. 43.T.SS.H. 44.T.SS.H. 44.T.SS-H. 44.T.SS.H. 44.T.SS.H, 45.T.SS.H. 46.T.SS.H. 47.T.SS.H. 47.T.SS.H. 48.T.SS.H. 49.T.SS.H. 50.T.SS.H. 51.

T.SS.H. 52.T.SS.H. 53.T.SS.H. 54.T.SS.H. 55.T.SS,H. 56.T.SS.H. 57.T.SS.H. 58.T.SS.H. 59.T.SS H. 60.T.SS.H. 6I.T.SS.H. 62.T.SS.H. 63.T.SS.H. 64.T.SS.H. 65.T.SS.H. 66.T.SS.H. 67.T.SS.H. 68.T.SS.H, 69.T.SS.H, 70.T.SS.H, 7I.

7l-228840*08927l-100340-1030*24-0',724

4l-0673"n-2287

40-090740-09r740-091840-091970-991170-99t4*70-19r770-9263t4-130270-78207 l-1 416t4 t6r9*40-09337t-223868-066116-037840-099329-208976-03087I*236671-22311t-222340-1007'71 1t657t-l16640-096840-09697t-21982l-2133*7t-19892t-2134*

Flywheel-right sideScrewed plug-right side

Washer-flywheel boltBolt-flywheel (f" u.N.E. x l+")Bearing-crankshaft left side (Hoffmann R325L)Key-alternator rotorFlywheel-left side

Big-end shell (standard)Big-end shell (-.010")Big-end shell (-.020")Big-end shell (-.030")

flywheel

2

2

2

2

Connecting rod completeBolt-connecting rod (fi" u.N.F. x 2-21164')Liner-cylinder barrelCylinder barrel completeNut-carburetter stud (fi" uN.r.)"Tufnol" spacer-carburetter fl ange

Paper gasket-carburetter fl ange

Stud-carburetter mounting (*" u.N.c./u.N.r. x l+")Cylinder head gasket

Cylinder head with fixed fittingsInlet valveFibre washer-oil pipe unionOil pipe-feed to rocker boxNut-oil pipe unionOil pipe union-rocker boxBottom cup-valve springInlet valve guide .

Outer valve springInner valve spring . .

Top collar-valve springSplit collet-valve springInspection cap-rocker boxFibre washer-inspection cap

Gasket-rocker boxStud-cylinder head (fi" u.N.c.lu.N.n. x 3/a")Dowel-cylinder head

Stud-cylinder head, dowel position (t'6" u.N.c./u.N.r. x 2{$")2l-2092 Stud-rockerbox

* Special material: 36.-EN24. 40.-EN24. 46.-85.111.51.-ENI6R. 68.-EN16R. 70.-EN16R.

t See page 6.

2

I

2

2

2

4

2

2

2

2

22

11

www.bsaunitsingles.com

Page 12: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 2

sEl

T

53-\,

q

I2

www.bsaunitsingles.com

Page 13: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 2 CRANKCASE

Plate SparesModel Ref. Number Description

PerSet

T.SS.H. 1. 29-2053 R.otor mounting nutT.SS.H. 2. 29 2054 Rotor mounting washerT.SS.H. 3. l4,l90l Stator mounting nut (f" u.N.n.) 3

T.SS.H. 4. 02-0525 Stator mounting washer (i" x !" x .048") 3

T.SS.H. 5. 40-0705 Grommet - alternator leadsT.SS.H. 6. 21 1t.95* Front stud - stator mounting (f" u.N.r. x fi" u.N.c. x 2-19132")T.SS.H. 7. 40 0210 Engine sprocket (23T)T.SS.H. 8. 40 0025 Oil seal - crankcase left-sideT.SS.H. 9. 14-0303 Nut - cylinder to crankcase (f" u.N.n.) 4T.SS.H. 10. 02-0130 Washer - cylinder to crankcase (*" x 11116" x .080") 4T.SS.H. 1,1. 40 1010 lnlet push rodT.SS.H. 11. 40 1021 Exhaust push rodT.SS.H. 1' 10-94.28 Tachometer drive asserr.rbly completeT.SS.H. 12. 70-9382 Tachometer drive gearT.SS.H. 13" 70-9381 Tachorr-reter drive shaftT.SS.H. 14. 10 9430 Drive shaft "O"-ringT.SS.H. 15. 10 9511 Tachometer drive body . .

T.SS.H. 16. 24-0036 Tachometer cable seal rvasher . .

T.SS.H. 17. 70-9431 Drive shaft locating pinT.SS.H. 18. 70-9383 Tachometer drive thrr-rst washerT.SS.H. 19. 70 9429 Drive gear retaining pin. .

T.SS.H. 20. 21 1812 Timing hole plug (1" x 13 u.u.c. x ]")T.SS.H. 21. 70-8896 Washer - tin-ring hole plugT.SS.H. 22. 40-0394 Dorvel - inner tiining cover to crankcase 2T.SS.H. 23. 40-0242* Screw - tacho,neter drive and cover (2 n.n. x 2f5") 2

T.SS.H. 24. 70 9384 Sealing plateT.SS.H. 25. 7l-1422 Joint washerT.SS.H. 26. 71-2513 Tappet - inlet and exhaustT.SS.H. 27. 7l-2210 Pressure release valve assemblyT.SS.H. 28. 70-1670 Washer - pressure release valveT.SS.H. 29. 70-8315 Camshaft bushT.SS.H. 30. ll-2297 Camshaft completeT.SS.H. 31. 71-1679 Camshaft pinion keyT.SS.H. 32. 71-2299 Spacing washer - camshaftT.SS.H. 33. 4l-0569 Crankshaft pinionT.SS.H. 34. 40-0455 Lockwasher - crankshaft nut . .

T.SS.H. 35. 37-1798 Nut - crankshaft pinion ($" n.s.c.)T.SS.H. 36. l4-1301 Nut - oil punrp spindle (f" u.N.r.)T.SS.H. 37. 29-0541 Lockwasher - spindle nutT.SS.H. 38. 4i-0603 Oil pump spindle gearT.SS.H. 39. 71 2119 Oil pump spindle housingT.SS.H. 40. 71 2229 Oil pump driving spindleT.SS.H. 41. 7l-1147 Oil pump driven spindleT.SS.H. 42. 7l-2230 Oil pump driven feed gearT.SS.H. 43. 7l-2115 Gasket - oil pump to crankcaseT.SS.H. 44.I 7l-2125 Oil pump bodyT.SS.H. 7l-1819** Shim-engine sprocket 0.010"T.SS.H. 71-1820** Shim-engine sprocket 0.015'

f See Page 5 for tachometer kit complete

f See Page 5 for oil pump complete** Not illustrated

l3

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Page 14: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 2-Contiruted

a-s=

-i7

n@E/ 28\v/--

to-w776- '75

*tt

44*\d-Jle..--4s

:i---%Y+r-- --fr1

I48 - --

4116

t4

www.bsaunitsingles.com

Page 15: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 2-ContinuedCRANKCASE

tuIodelSpares

NumberPerSet

PlateRef . Description

T.SS.H. 45.T.SS.H. 45.T.SS.H. 46.T.SS.H. 47.T.SS.H. 48.T.SS.H. 49.T.SS.H. 50.T.SS.H. 5I.T.SS.H. 52.T.SS.H. 53.

T.SS.H. 54.T.SS.H. 55.T.SS.H. 56.T.SS.H. 57.T.SS.H. 58.T.SS.H. 59.T.SS.H. 60.T,SS.H. 6I.T.SS.H. 62.T.SS.H. 63.T.SS.H. 64.T.SS.H. 65.T.SS.H. 66.T.SS.H. 67.T.SS.H. 68.T.SS.H. 69.T.SS.H.T.SS.H. 70.T.SS.H. 71.T.SS.H. 72.T.SS.H. 73.T.SS.H. 74.T.SS.H.T.SS.H.T.SS.H. 75.T.SS.H. 76.T.SS.H. 77.T.SS.H. 78.T.SS.H. 79.T.SS.H. 80.

T.SS.H. 81.T.SS,H. 82.T.SS.H. 83.T.SS.H. 84.

2t-0591*14-160614,1 90 r

68,09384t-060961-13917t 2t241t-2t224l-07067 t-l t48l4-140r7 l-t4244t 05677 r-229141-062470-99797l 254767 1286

60-353002-05252t-2t11l4-19017t 265662 026340-10317 t-22432l-2111**t4-190102,052540-031 5

2l-198568-0383l4-6102**66-75 1 8**21-189040-02437 t-I4t940,024610,318914,030202-092367-123640-0865*7t 1869

Stud--oil pump to crankcase (f" u.N.r./.u.N.c. x 2$")Stud-top, oii pump to crankcase (t/4"u.N.r.lv.N.c. x 1%)Nut-oil pump to crankcase ({" u.N.E.)

Washer-oil pump stud nut (17164" x *" x *-")Screw-oil pump bottom plate (fr" B.s.c. x l+")Oil pump bottom plateOil pump driven scavenge gear.

Oil pump driving scavenge gear

Dorvel-oil pump to crankcaseDowel-oil pump body to housingStud-crankcase sump cover (f" u.N.n.1u.N.c. x l")Gasket-crankcase sump coverCrankshalt oil p'rrnp drive worm gear

Oil pump drive distance washer

Crankcase scavenge valve assembly

Crankcase filter assemblyDowel--inner timing cover to crankcase

Crankcase sump cover"O"-ring gearbox drain plugWasher-sump cover stud (f" x j" x .048")

Gearbox drain plugNut-crankcase sump cover (f" u.N.r.)Oil return pipe

)I

1

4

2

2

42

Clip-rocker feedRocker feed pipeOil feed pipeNut-oil pipes to crankcase

Nut-chain oiler stud (f" u.u.r.)Washer-rear chain oiler (*" x tl" x 5164")

Oil pipe-rear chain oilerStud-rear chain oiler ({"Rear chain oilerBolt-chain oiler blankingWasher-chain oiler blanking . .

Stud-crankcase rear (fr" u.N.c./u.N.r.Oil seal-primary chaincase

Gasket-primary chaincase back

x2jlll16')' .. ..

ptpe

Screw-primary chaincase back (2 n.l.Cover plate-primary chaincase back

u.N.F. - 1|" u.N.c. x 5r")

x *")

II2

2

2Nut--crankcase stud (f," u.N.E.)

Washer-crankcase strid nut (* " * *" x #")Crankcase dowelCylinder barrel stud (j-Crankcase complete

*{'Not illustrated

15

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Page 16: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 2-Continued

il

l

;

86 8s'1

84

I

i83I

182

79-

'r8 |

I6

I

57 l'56

55

/+.*tt

@__36*_37W_:ra

;>%i,s9

6s/

-#-q-l

t6

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Page 17: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 2-ContinuedCRANI(CASE

Plate SparesModel ReJ. Number Description

PerSet

T.SS.H'T.SS.H.T.SS.H.T,SS.H.T.SS.H.T.SS.H.T,SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

8s. 02-092386. 14-621987. 57-094888. 40-103389. 2t-204290. 02-092391. 14430292. 40432793. 2t-1896*94. 2t-1894*95. 4t4t4396. 41414697 19-801998. t9-r262

Washer--rcrankcase bolt (fr" x $"Bolt---+rankcase ($" u.t't.c. x 1t")

x +")

Washer-gearbox dipstickGearbox dipstick.Stud-crankcase top (1|" u.N.r./u.N.c. x 2-ll116')

1/\t6/Washer.-crankcase stud (S" x *" xNut-crankcase stud (S" u.n.r.)Spacer '294-'297'Bottom studs-tator mounting (f" u.N.n. ,-56" u.N.c. x 2f6')Rear stud-stator mounting (*" u.N.r. t'6" u.N.c. x 2-19132')Primary chain tensionerDistance piece--chain tensionerAlternator rotor (Lucas 54213901)Alternator stator (Lucas 47205)

2

221

x6.-EN148. 23.-EN8R. 45.-ENl48. 83.-ENl5. 93.-EN8. 94.-EN14B.

t7

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Page 18: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 3

37 \S 30^ q@4^38.__ -'40 z92e^ ((L)

4t 42-.744

6. - -47"\-t

<)

81 80 79

r Gr*^t, \.,17 Wo

i

76 75 74

F_- - sB

{fi'**u'>4 /,f.h*re65 64

18

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Page 19: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 3GEAR CLUSTER AND TIMING COVERS

Plate SparesModel ReJ. Number Description

PerSet

T.SS.H. 1. 90 6074 Felt washer-final drive sprocketT.SS.H 2. 40 305i* Nut-final drive sprocket (l-,$" w.r.)T.SS.H. 3. 40-3121 Lockwasher-finai drive sprocketT. 4. 4l-3095 Final drive sprocket (16 teeth) ..

SS.H. 4. 4l-3092 Final drive sprocket (17 teeth) . .

T.SS.H. 5. 40 3061 Gearchange return springT.SS.H. 6. 57,3763 Anchor bolt-gearchange return springT.SS.H. 7. 40-3321 Gearchange qr.radrantT.SS.H. 8. 40-3059 Rivet-quadrant plunger 2T.SS.H. 9. 68 0289 "O"-ring-oil feedT.SS.H. 10. 15 0257 Breather pipe inner timing coverT.SS.H. 11. 40-0862 Circlip-crankshaft oil sealT.SS.H. 12. 40-0971 Oil seal-,crankshaftT.SS.H. 13. 4l-01 15 Gron.rmet-contact breaker leadsT.SS.H. 14. 40 0222 Canishaft bushT.SS.H. 15. 40-0028 Peg-camshaft bushT.SS.H. 16. 7l-2545 Inner timing coverT.SS.H. 17, 14-6610 Screw-inner cover to crankcase (f" u.N.c. x l+,) .. 4T.SS.H. 18. 40-0619 Camshaft oil sealT.SS.H. 19. 14 6606 Screw front-inner cover to crankcase (f,,, u.N.c. x f,,) 2T.SS.H. 20. 60-2364 Ball-non-rerurn valve (f" diameter) . .

T.SS.H. 21. 40-0385 Spring-non-return valveT.SS.H. 22. 14 6610 Screw-inner cover to crankcase ({,, u.N.c. x 1+") . .

T.SS.H. 23. 21 2044 Screwed plug-non-return valve (f" u.N.c.)T.SS.H. 24. 70-9526 Sealing plug (when oil switch is not fitred)T.SS.H. 25. 60-2363 Ball-clutch thrust (g" diameter)T.SS.H. 26. 40-3282 Rack-clutch operatingT.SS.H. 27. 76 0271* Mainshaft nut (!" e.s.c.)T.SS.H. 28. 57 4343 Lockwasher-mainshafrT.SS.H. 29. 40-3213 Spring-kickstart rarcherT.SS.H. 30. 40-3272 Bush-kickstart ratcher pinionT.SS.H. 31. 57-4336 Pinion-kickstart ratchetT.SS.H. 32. 51-4339 Ratchet-kickstartT.SS.H. 33. 76 0528 Circlip-mainshaft bearingT.SS.H. 34. 90-0011 Mainshaft bearing (Hoffmann LS.7)T.SS.H. 35. 66-3014 Dowel-outer timing coverT.SS.H. 36. 57-3164 Anchor bolt-kickstart return springT.SS.H. 37. 57-4342 Stop-kickstart quadrantT.SS.H. 38. 40 3277 Circlip--kickstart stop . .

T.SS.H. 39. 57 2150 Clutch operating leverT.SS.H. 40. 40 3283 Clutch operaring pinionT.SS.H. 41. 19-1853 Auto-advance unit (Lucas 54419653) . .

T.SS.H. 42. 19-1849 Contact set (Lucas 54419827)T.SS.H. 43. 40 0723 Sleeve-contact breaker leads .

T.SS.H. 44. l9-1852 Contacr breaker plate (Lucas 54419645)T.SS.H. 45. 40,0682 Washer-contact breaker pillar bolt .. z

l9

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Page 20: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate *Continued

lo tl 12

llr3

', *4-oo

@\.--i3--?R

/ffi3(UEi:S

20

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Page 21: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 3-ContinuedGEAR CLUSTER AND TIMING COVERS

Plate SparesModel Ref. Number Descriptiott

PerSet

T.SS.H. 46. 40 0683 Pillar bolt. contact breakerT.SS.H. 47. 68 0331 Washer-auto-acivance unitT.SS.H. 48. l4-0208 Bolt-auto-advance unit (/4" u.N.r. x 2[")T.SS.H. 49. 7l-1423 Gasket--contact breaker coverT.SS.H. 50. 70 8737 Contact breaker coverT.SS.H. 51. 29-3319 Lock-washer cover screu, line 54 2

T.SS.H. 52. 10-1354 Screw-contact breaker cover (2 n.l. x l") 2

T.SS.H. 53. 40 3073 Gearchange leverT.SS.H. 54. 89 3208 Rr.ibber-gearchange leverT.SS.H. 55. 42-6554 Bolt-gearchange lever 1t/t" n.s.c. x ]")T.SS.H. 55. l4-1301 Nut-kickstart crank cotter (1,24" u.N.r.)T.SS.H. 57. 60-2320 Washer-kickstart crank cotterT.SS.H. 58. 57 4351 Cotter-kickstart crank (%" u.N.e.)T.SS.H. 59. 40 0236 Screrv-or-rter timing cover (2 e.a. x f") 3

T.SS.H. 50. 14-661I Screw-outer timing cover (f" u.N.c. x 1+")

T.SS.H. 61. 14-6612 Screw-outer timing cover (f" u.N.c. x 2") 3

T.SS.H. 62. 14 6614 Screw-outer timing cover (-.1" u.N.c. x 21")T.SS.H. 63. 57-2641 Oil seal -kickstart spindleT.SS.H. 64. 51-2330 Pedal rubber-kickstart crankT.SS.H. 65. 68-3203 Foiding pedal-kickstart crankT.SS.H. 66. 57 2163 Kickstart crank completeT.SS.H. 67. 40-3084 Bolt-kickstart pedalT.SS.H. 68. 40-3085 Spring-kickstart pedalT.SS.H. 69. 60-2364 Ball-kickstart pedal ({" diameter) . .

T.SS.H. 70. l4 6610 Screw-outer timing cover (f" u.N.c. x 1f")T.SS.H. 71. 14-6606 Screw-outer tir.ning cover (f" u.N.c. x f")T.SS.H. 72. 7l-2213 Outer timing coverT.SS.H. 73. 57 2642 Bush-kickstart spindleT.SS.H. 74. 57 4338 Spring-kickstart returnT.SS.H. 75. 57-4341 Kickstart spindle completeT.SS.H. 76. 40-3292 Bearing-layshaft (Torrington B.108)T.SS.H. 77. 40-3258 Shim-layshaft first gear

T.SS.H. 78. 40-3262 BLrsh-layshaft first gear III

T.SS.H. 79. 57 3814 Gear layshaft first (27 teeth) .

T.SS.H. 80. 57-3871 Gear-layshaft third (19 teeth)T.SS.H. 81. 4l-3078 Circlip--layshaftT.SS.H. 82. 4l-3068 Layshaft with top gear (14 teeth)T.SS.H. 83. 4l-3074 Thrust washer ('083-'085") .. as reqd.T.SS.H. 83. 4l-3072 Thrust washer ('078-'080") . . as reqd.T.SS.H. 84. 40-3292 Bearing-layshaft (Torrington 8.108)T.SS.H. 85. 41-3070 Gear-layshaft second (22 teeth)T.SS.H. 86. 4l-3054 Oil seal-mainshaft (Pioneer 20615618)T.SS.H. 87. 1l-1271 Shield-gearbox main bearingT.SS.H' 88. 29 3851 Bearing-mainshaft (Hoffmann 130)

T.SS.H. 89. 57-3872 Gear-mainshaft top (22 teeth)T.SS.H. 90. 40-3020 Spacer ('093-'094') .. as reqd.

2t

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Page 22: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 3-Continued

3149to

eel

-19.}-e(^%- 2l9SS

30^ t?lzo'442

4444

,45

84 83 I ,o@J

76 75

"\:-+eVr

za,--4tffi's=\-*W, /w z:

\VZ _51

I

-7'n8A 79

'se:ryX;*fl_q,

74Arfiil

61 66 65

r 69-n ,,," u*-l

22

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Page 23: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 3-ContinuedGEAR CLUSTER AND TIMING COVERS

Plate SparesModel Re/'. J,lumber Description

PerSet

T.SS.H. 90.

T.SS.H. 90.T.SS.H. 9I.T.SS.H. 92.T.SS.H. 92.T.SS.H. 92.T.SS.H. 93.

T.SS.H. 94.T.SS FI 95"

T.SS.H. 96.T.SS.H. 97.T.SS.H. 98.T.SS.H. 99.T.SS.H. 100.T.SS.H. 101.

T.SS.H. 102.T.SS.H. 103.

T.SS.H. 104.T.SS.H. 105.

T.SS.H. 106.T.SS.H. 107.T.SS.H. 108.T.SS.H. 109.T.SS.H. 110.T.SS.H. 111.

T.SS.H. 112.T.SS.H. l13.T.SS.H. tl4.T.SS.H. 115.

40-3 r 26

40 3t2157 3876

40 3019

40 3t 19

40,3 r 20

4 1 -306341 3089

40 3007

51,434414 6608

40-303340,303240,329157-385053-304960 212440,332340-3t9440-3 1 55

40 3193

40-304440-304540 304240,304357-385440-326541,3045t0-6026

Spacer t'098 099")Spacer (' 103 '104")Gear-mainshaft second (21 teeth)Spacer ('075 '016")Spacer ('070-'071") . .

Spacer ('080-'081") . .

Gear-mainshaft third (24 teeth)Gear-mainshaft first (16 teeth)Busl.r-lnainshaft push rodMainshaft rvith bushScrew-inner timing cover (f" u.N.c. x 1")

Selector fork-layshaft . .

Spindle-selector forks . .

Canr plate pirot .

Cam plate. .

Screwed plug-nrainshaft oil feed

Splrt pin-cam plate pivot ($" x l")Screrv-keeper plate (5 n.n. x +")Retaining plate-quadrant plungersSpring-gear control plungerPlunger-gear control quadrantBolt-cam plate spring (2 n.n. x S")Lockplate-camplate springSpring-cam plateSprin,u plateSelector fork-maClutch push rod

nshaft

as reqd.as reqcl.

1

as reqci.

as reqd.as reqd.

II

2

2

2

Bush-mainshaft top gear

Circlip-mainshaft oil seal

*Special material: 2.-EN8. 27.-EN15.

23

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Page 24: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 4

9

o _to

il

24

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Page 25: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 4CLUTCH

Plate Sparestutodel Re./. Number Descripliort

PerSet

T.SS.H. I.T.SS.H. 1.

T.SS.H. 2"

T.SS.H. 3.T.SS.H. 4.T.SS.H. 5.

T.SS.H. 6.T.SS.H. 7.T.SS.H. 8.T.SS.H. 9.T.SS.H. 10.T.SS.H. 11.

T.SS.H. 12,T.SS.H. 13.

T.SS.H. 14.T.SS.H. 15.T.SS.H. 16.T.SS.H. I7.T.SS.H. 18.T.SS.H. 19.T.SS.H. 20.T.SS.H. 21.T.SS.H. 22.T.SS.H. 23.T.SS.H. 24.T.SS.H. 25.T.SS.H. 26.T.SS.H. 27.T.SS.H. 28.T.SS.H. 29.T.SS.H. 30.T.SS.H. 31.T.SS.H. 32.T.SS.H. 33.T.SS.H. 34.T.SS,H. 35.T.SS.H. 36.T.SS.H. 37.T.SS.H. 38.T.SS.H.

57 216670 9800l4-66107 6-4t t668 08397l t42040-1 005

14-66t I

1 t-20252t 195t66,301451-401940-322040 323340-_7234

40-322140-3221"14 0401

57-41895l-4t2t2t-194340 3231

4t-32157l-106514-180470-878241-3212l9-86r340 32067 t-14t857-420040-3 1 50

57-393157 419840-320757-418641-320940 321040-333057-4191

N.c. x 1f,")

Screwed plug-primary cover (1" x l6 u.N.s.)Screw breather plug-primary cover (1" x 16 u.w.s.)Screw--prirnary cover (f" u.N.c. x l+")Screrv inspection cover (2 n..a.. x ]")Timing ir.rspection cover.Cover gasketI-enition pointerScrew--primary cover ({" uPrirnary cover assemblyScrerv-prirnary cover (]" u.N.c. x lTs")Dowel-prirnary cover to crankcaseClutch pressure plateClutch driven plateClutch driving plateRetaining washer, clutcl.rLockr,vasher:--clutch nutRetaining nut clutch (j"Lock rr ut-cl utch adjustingClritch adjusting screw ({"

B.s.c.)screw (f" u.N.r.)u.N.r. x $")

Ch"rtch spring cupDrain plu-e-primary case

Clutch springClutch spring nutWasher-oil level screwOil level screwWasher for primary coverRubber pads--cush drivePrimary chain (70 pitches)

plugs

Roller-clutch hubPrimary cover gasket

Clutch hubKey-clutch hubThrust r.vasher

Chainwheel complete (52 teeth)Retaining plate (inner) . .

Clutch centreClutch spiderRetaining plate (outer) . .

Screw-inner and outer retainiClutch assembly complete

ng plates (1 n.a. x 15116") ..

*Special material: 16.-EN15.

"}

8

25

25

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Page 26: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 5

',? r

iii

l

\\/i1t':._)

l

I

I

I

gl+

I

(

35

l

^i37 36

I\^Ae@\"/( 3e 38 |

4'-- |

6t.^"v9ilrit2 ll

\\

t3

elX-21

26

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Page 27: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 5FRAME, BATTERY CARR.IER, TOOL TRAY AND ENGINE SHIELD

I'tote SparesModel Ref. l,luntber Descript iott

PerSet

T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H,T.SS.H.

l. 76 Oltllz. 83 22043. 83-20r B

4. t4 01265. 70 375r6. 83-30467. 83-29858. 83-20048. 68,49259. 10-877010. t4 023911. 14 1303

12. 10-877013. 2t-206t"11. 2t-0155ls. 37 2085

16. 83-3556t7. 83-200518. 83 2015

19. 10,877024. 2t-067t21. t4-0n422. 14 1303

23. 70-877024. 83-306325. 83 200626. 21,20t527. t4-t30228. 75-017629. t4-130330. 70-817031. t4-r 303

32. 60-233133. 83 329634. 40 09463s. 60-233036. t4-130237. l4-130138. 68 4597

39. 82-900440. 68-45774t- 60-234142. 2l-206043. 83-267t44. 54-800645. 83-201346. 83-298547. 83-222848. 60-232949. 2t-213749. l4-1301

*Special material:

Washer - battery carner n1ountrngBush -- battery carrier nrountingBaitery carrier'Bolt - engine steady ($" u.N.r. x 1'r1Washer-oil fillerOil filler cap and dipstickFranie conipleteDistance piece - engine ruountin-q, frontDistance piece - exhaust pipe and lront engine boltWasher - engine mounting, frontBolt - engine rnour.rtin-e, front ($" u.N.r. x 3")Loclinut - engine niountin-q. bottonr ($" u.N.r.)Washer - engine nounting. bottomStucl - engirre mounting. bottoin ($" u.x.r.Nut -- sllin-eing aril pivot (13/16" u.N.c.)\,\'ashel sir irrs.irrp arm pir otAd.iLrster - srr iriging arnr pir ot

Spacer - engine mounting, botton'iEngine nounting plate - rear. rightWrsher - engine mounting. rearBolt - engine mounting. rear (i/ u.N.r. x 37(")Bolt - engine mollnting. rear (fi-" u.w.r. x f")Locknut - engine n.rounting. rear ($" u.N.r.)

4

4l2

1

I

1

I

I

I

I

2

2II

I

1

1

I2I+IzI1

I48

I

I2

2I1

zZ

2I

II42

I

iiII2

2

2

Washer - engine mounting. rearEngine mountin-s plate -- rear. leftCronrnret - batterl carriei' mourttiugOil drain plugLockr.rr-it - engine mounting, rear (t'o " u.N.r.)Washer - engine mounting, rearLocknut - engine mountin-u. front ($" u.N.F.)Washer - en-sine mounting, frontLocknut - engine steady ($" u.N.r.)Washer - engine stead.v (*" x *" x .072")

Engine steady stayEngine steady bracketWasher - engine steadyLocknut - engine steady (fr" u.N.r.)Locknut - batterrv carrier mounting (f" u.N.r.1Battery tra)Hook - battery strapBatteri strapWasher - tool tray mounting (+" x |" x .072")

Bolt - tool tray and battery carrier mo-r-rnting (f" u.N.E. x 43") . .

Tool trayWasher - drain plugSpindle assembly - swinging armFrame completeEngine shieldWasher - engine shield fixing (I" x #" x '018')Stud - engine shield fixing ({" uN"E. x }")Nut - engine shield fixing

13.-ENl6R.

27

For colour finish code refer to page 3.

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Page 28: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 6

4

J

23 ___=_\ 24

1

)a\

t9 17 t6 ls t4 t3

28

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Page 29: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 5SWINGING ARM, REAR SUSPENSION AND CHAINGUARD

Plate Spares

Nloclel Ref . Number Descr ip t ion

PerSet

T.SS.H.T.SS.H.T.SS.H-T.SS.H.T.SS.H.T.SS.H.

68 4708

21 210583 3r6283 3165

l4-r30383 261482 467t2t-207114 1304

83 317060 233914-130283 2233

83-30 r 483-201283 224483 2245

83, r 969

83-2212t9-1458t9-745414-0234! 9-530560-2322l4 1303

14-022t83-222414 6l0r60,24t]60-232960-t841*24 1088r'

Spriii-u -.- propScrew propProp standDistance piece

standstand ($" uN.n

l.j

-t.

4.

5.

6.

7.

8.9.

10.

11.

12.13.

14.15.

16.17.18.

19.

20.21.,,.,

?l24.25.26.11

28.to30.

" I rl')

1

1

1

IIIIz2

1

II

2

zL

2

2I

T.SS.H.T.SS.H.T.SS.H.T.SS.H,T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.T.SS.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

Locknut .- prop standChainguard ertension

bolt (i" u.N.n.)

Sprin-e - centre stand (optional extra)Bolt - centre stand firing (optional extra)Lockrrut - centre stand fixing (fr" u.N.r.) (optional extra)Centre stand (optional extra) ..Washer - chainguard to srvinging armLockntrt - chainguard to swinging arm (fr"Tlrru:t wasirer - - sivirreirrg llntSeal - thrust uarher . .

u.N.F.)

Sleeve - innerOil seal - swinging annNeedle bearing - swin-eing arn, (Torrington B.1616)

Spacer tr-rbe - swinging arm bearingSviinging arm conrplete . .

Danper spring (Girling 64543708) . .

Darnper unit complete (Girling 5.2484)Bolt - tiamper fixing, top and bottom ($"Bush - darnper unit (Girling 64533645)Washer - damper fixing, top and bottomLocknut - - damper fixing, top and bottomBolt - chainguard to swinging arm (fr" u

u.N.r. x 1f,")

Chainguard completeScrew - chainguard extension fixing (f" u.N.c. x ]")Lockwasher -- chain-euard extension fixingWasher - chainguard extension fixing (f" x ft" x '056")Grease nipple - swinging armFibre washer -- grease nipple

For colour finish code refer to page*Not ilh-rstrated

({" u.N.r.). .

N.r. x 2")

I22

4444III

II

2

2

--),

29

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Page 30: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 7

Fre

12 t3

ilI'il,:q

\

Po l{rtap

qs7J' l*

@b

30

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Page 31: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 7REAR BRAKE CONTROL, FOOTREST AND SILENCER

Plate Spares

Model Rrf. Number DescriptionPerSet

T.T.T.T.T.T.T.T.T.SS.H.T.SS.H.

SS.H.SS.H.

T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

SS.H.SS.H.

T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.

H.T.SS.H"T.SS.H.T.SS.H.T.T.SS.H.T.SS.H.T.SS.H"T.SS.H.T.SS.H.T.SS.H.

42-492583-309214-021683-3095t4,130283-309483 2218

83-2220I 4-1 303

02-2t3883-30 I 5

2t-204560-268360 2393l4-1301I 4-010302-2 I 38

83 204083-2616I 4-l 303

83-30 l 7

40-48502t-2094I 4-1 303

40 015783-261714-02t614 130268-483529-7 583

t4-220368 033 r

14 0r r37 t-2n4]t 24007l 24|l14-0t t415-5155t4-t30282-138771,24027 5-27251 5-27 t9t4-0218t4-130283-3638

SilencerSilencer

l.,3.

4.5.

6.

7.8.9.

10.

11.

t2.13"

14.15.'1.6.

17.18.

19.

20.21.)',23.24.7<

26.)128.29.30.31.1?

33.

34.34.35.36.37.38.39.

RLrbber. foldi ng footrestFolding footrestPivot bolt - fblding footrest (fr" u.N.r. x l+")Return sprin-e. folding footrestLocknut - folding footrest pivot (5" u.N.r.)Anchor peg - retufn springBracket - folding footrest. leftBracket - tblding footrest. rightLocknut - footrest bolt ($" u.N.r.)Washer - footrest bolt ($" x ?" x #")

Bolt -' pillion footrest pivot (fr" u.u.r. x l$")Locknut - pillion footrest pivot (1f" u.N.r.). .

Fillion footrestRubber - pillion footrest

2

2

2

2

2

2IIIIII

I1

I1

I1

II1

Footrest - leftPivot - rear brake pedal

Split pin - brake rod (fi" x $")Washer - brake rod (]" x J" x '040")Locknut - brake pedal adjuster (f" u.N.E.) . .

Screw. brake pedal adjuster (f" u.N.r. x f")Washer - brake pedal pivot (*" x *" x r'u ")

Brake pedalBrake rodLocknut - brakeFootrest - rightFootrest rubberFootrest bolt

pedal pivot (*" u.N.r.)

Locknut - pillion footrest anchor bolt (+" u.N.n.)

Washer - pillion lootrest anchor boltAnchor bolt - pillion footrest

I222

222

2

5

5

1

t

Screw - heat shield fixing (f" u.N.F. xWasher - heat shield fixing (9 32" x tk"

Bolt - silencer fixing. lower (*" u.N.r.Heat shield

Bolt - siiencer fixing top (fr"Washer - silencer fixingLocknut - silencer fixing (ft"Adjuster nut - brake rod

u.N.r. x f".1

tII,1t

2

II1

21

II

u.N.F.)

Tailpipe heat shieldClamp - silencer to exhaust pipe

'D' Washer - silencer clamp boltBolt - silencer clamp (fr" u.N.F. x 1rl8")

Nut - silencer clamp bolt (51d" u.N.F.)

Lockwasher - pillion footrest, right. .

31

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Plate 8

67I 9

ffip-B_-

l9

20

*\

9__2t 29

42----Q,s

l

I

25 J(J

h-b

33

34

Wu35

36

31__-Q

32

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Page 33: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate BAIR CLEANER, SIDECOVER AND OIL PIPES

Plate Sparestulodel Re.l. NLtmber Description

PerSet

T,SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T,SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.

H.SS.

T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.H.SS.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

83-293160-260183 3541

14-010283-3'72127-856014-130168 91 15

83-218560-3 I 59

83 293860-3 1 60

83,27 t6l4-0 I 03

40-270583 3605

60-242114-040 r

29 054183-307983-308 I

41-83 I 6

60-306582-890 I

4l 83144l-83r341-831241-831783-308068 8343

83-200660-316140 833r60 3257

60-325960-326t82-943040-832240 832383-307883-3011t9-4592t9-4593t9-459419-459019-459519-4589t4-011475-017614-1302

Siiencer-left1.)3.

4.

5.

6.

7.8.9.

10.

11.

12.13.

t1.15.

16.

17.

18.

19.20.21.)',23.24.tq26.11

28.29.30.31.32.32.32.33.aA

35.36.37.38.39.40.41.42.43.

Element air cleanerAir cleaner filter box completeBolt-front fixing bracket (f" u.N.r.Fixing bracket-frontWasher-front fixing bracketNut- front fixing bracket (f"Oddic clip-sidecover fi xing

fixing

x *")

III2

I2

2

2

11

Rivet-sidecoverOddic fastenerSidecove-rightRubber washer-oddie fastenerRubber sleeve-air cleaner to carburetter . .

Bolt-filter box to frame (f" u.N.r. x d")Washer-filter box to frameStud assembly element to box (]" uN.n. r ]")Washer-elenrent to boxNr-Lt-air cleaner fixing (*r" utt.r.)Washer-air cleaner fixingReturn pipe-filter to frameConnecting tube filter to frameNut-oil filter, iniet and outletSleeve--oil filter, inlet and outletAdaptor-oil filter outletWaslrcr -oil filter inletNut-oil filter inlet elbouOil filter elborvConnecting tube-oil filter inletOil return pipe-engine to filtei

Oil filter complete (BritishBolt-oil filter fixing (fi"Washer-oil filter fixing

I

21

2

4

1

I1

1

II2

2I1

I

II

I6

I6

I2.,

Clip-oil pipeRr-Lbber-air cleanerGrommet-sidecover mounting and air filter boxFibre washer-frame oil filter . .

Trar.rsfer-sidecoverTransfer-sidecoverTransfer-sidecoverOil filter-frameOil feed pipeNut-oil feed pipe unionOil feed pipe-frame to engineBreather pipe oil reservoirWasher oil filter bolt'O' ring-oil filterCirclip-oil filter boltOil filter element and seal

'O' ring-oil filter

2

II1

II

Filters Ltd. F.B.994) .

uN.F. x *") 2

2

2Nut-oil filter fixing

For colour finish code refer to Page 3

35

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Page 34: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

34

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Page 35: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Flate 9FRONT FORKS

ModelPlate SparesRef. Number Description

Per

Set

T. 1.

T.SS.H. 1.

T.SS.H. 2.

T.SS.H. 3.

T.SS.H. 4.

T.SS.H. 5.

T.SS.H. 6"

T.SS.H. 7.!"

T.SS.H. 8.

T.SS.H. 9"

T.SS.H. 10.

T.SS.H. 11.

T.SS.H. 12.

T.SS.H. 13.

T.SS.H. 14.

T.SS.H. 15.

T.SS,H. 16.

T.SS.H. 17.

T.SS.H. 17.

T.SS.H. 18.

T.SS.H. 19.

T.SS.H. 20.

T,SS.H. 2I.T.SS.H. 22.

T.SS.H. 23.

T.SS.H. 24.

T.SS.H. 25.

T.SS.H. 26.

T.SS.H. 27.

T.SS.H, 28.

T.SS.H. 29.

T.SS.H. 30.

T.SS.H. 31.

97-4026

97-4023

14 0236

91 4029

t4-6219

42 0t51

91-0122

68-5050

21 1809

60 -2338

97-2266

2 1-0578

83-2211

97-4t t5

83-2209

r4-1303

02-2 l 38

91 4018

97-4050

2t-2062

60-2333

60-2630

21-5676

83-2007

97,4031

97-41t6

14-t203

02 2t38

97-3981

97-2270

91-3682

60-2336

14-7308

u.N.c. x ll")

Speedometer mounting bracket

Speedometer mo unting bracket

Pinch bolt-top yoke (f" u.N.r. x 2+',)

Nut steering stern

Bolt-hanc'llebar cap ( 5,u"

Washer-handlebar cap

Handlebar cap

Steering lock and key

Nut-headlamp mounting top, (Don-red {" u.n.t'.1

Washer-headlamp mounting, top (17 164" x $" x 3164"1

Sealing washer steerin-q lock grub screu'

Grub screw-steerin-e lock

Spacer-headlamp mounting bush

Top yoke complete

Bush-headlarnp mounting

Locknut-pinch bolt ($" u.N.r.)

Washer-pinch bolt (25164" x *" x #")Bracket-headlamp mounting, left

Bracket-headlamp mounting, right

Sleeve nut-headlamp mounting bracket

Washer-sleeve nut, headlamp mounting bracket (33164" x l"Gromr.net - sleeve nut. headlamp mounting bracket

Washer - sleeve nut, headlamp mounting bracket (*" x l" x

Bearing abutment ring .

Taper roller bearing

Steering stem

I

1

I

I

4A+

2

I

2

2

I

1

1

x +")

+')

I

4

I

7I

I

I

2

2

2

2

2

1

1

2

4

I

I

I

i

I

Locknut - bottom

Washer - bottom

yoke pinch bolt ($" u.N.r.)

yoke pinch bolt (25164" x i" x +!')Bottom yoke

Retainer - brake cable

Bracket - brake cable retainer

Washer - steering stem (25132" x lt1" x 5164")

Locknut - steering stem (f" u.x.c.)

*See page 6 for details of replacerr.rent keys

35

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Page 36: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 9-Continued

_9e:ii

" rW-'',,\

36

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Page 37: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 9-ContinuedFRONT FORKS

Plqte SpareModel Ref. Number Description

PerSet

T.SS.H. 32.

T.SS.H. 33.

T.SS.H. 34.

T.SS.H. 35.

T.SS.H. 36.

T,SS.H. 37.

T.SS.H. 38.

T.SS.H. 39.

T.SS.H. 40.

T.SS.H. 4I.T.SS.H. 42.

T.SS.H. 43.

T,SS.H. 44.

T.SS.H. 45.

T.SS.H. 46.

T.SS.H. 47.

T.SS,H. 48.

T.SS.H. 49.

T.SS.H. 49.

T.SS.H. 50.

T.SS.H. 51.

T.SS.H. 52.

T.SS.H. 53.

T.SS.H. 54.

T.SS.H. 55.

T.SS.H. 56.

97-4004

97-4076

97-4009

97-3996

t4-0240

82*8245

97-40t0

97-4003

97-4020

97-40t2

97-3894

97-_7893

14-0302

60-2428

97-3947

t4-1019

21-2102

97-4032

97*4033

97-400r

97-4002

97-4007

97-4011

97-4166

97-4008

97-4028

Washer - darnper tube

Stanchion end plug complete

Recoil spring

Dan-rper tube complete . .

Bolt - bottom yoke pinch bolt

Lockwasher - brake cable retainer

Washer - damper

"O"-ring - dampe

Valve - damper

Nut - damper valve

Drain plug - outer

Washer - drain plu

member

Nut - fork end cap (rj6" u.N.F.)

Lockwasher-forkendcap (21164" x *" x 23132')

Fork end cap

Bolt - damper tube

Stud - fork end cap

Outer member complete - right

Outer mernber complete - left

Oil seal - outer member

Scraper sleeve - outer member

Fork stanchion

Fork spring

Washer - top cap nut . .

Top cap nut

Dust cover - steering head

2

2

2

2

2

I

2

2

2

2

2

2

8

8

2

2

8

I

I

2

2

2

2

2

2

I

r valve

ob

JI

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Page 38: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate L0

I

I

q\)

28

2'7

56

7

8

d^S

38

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Page 39: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 10FRONT WHEEL (6 in. Brake)

Plqle Spareslllodel Ref. Nuntber Description

PerSet

T.SS.T.

SS.

T.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS,T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T.SS.T,SS"T.SS.T.SS.T.SS.T.SS.:t.

SS.

T.SS.

T.SS.

T.SS.T.SS.T.SS.T.SS.T.SS.

1.",

,3.

4.

5.

6.

7.

8.

9.

10.

11.

12.13.

14.15.

16.17.18.

19.20.21.)',23.24.t<26.)1

28.to30.31.32.33.34.34.35.35.36.36.37.37-

x 20)x l8)

27-68 I 037 319531,389237 358431-379660-263237 3791

37-065337-31 59

14 1304

60 2332l4-013483-266014 r30460-23322t-2063l4-130360-233131 3694r 4-r 303

60-233 I

37-205837-31043t-379937-319837-380465,590419-710129-585337-379337-148137-065337-123757 028037-369137-389531 369637*389437-369s37-389337-396931,391042-583660-268360-3152

Spcke nippleWheel rirn (WMl

40III

I

iI

iI

II

III

I

I

I

1

1

1

I1

I

I2

2

2

Wheel rim (WM2Security boltWheel spindleCirclip - grease retainer, right. .

Grease retainer -- rigl-rt

Bearing (Hoffmann 120)

Lock ringLockrrut - anchor strap to leg (rh" u.N.r.)Waslrer - locknut, anchor strap to leg (29164" x /s" x 3164")

Bolt - anchor strap to leg (ih" uN,n. r I ]d";Anchor strapLocknut - anchor strap to brake plate (fr" u.N.n.)Washer -locknut, anchor strap to brake plate (25164" x]" x3164")Stud - anchor strap to brake plateLocknut - brake lever (*" u.r.r.)Washer - locknut, brake lever (25164" x ]" x 3164")

Brake leverLocknut - fulcrum pin (*" u.N.r.)Washer locknut, fulcrum pin (25164"

Locknut - wheel spindle (2516a" x |"

bearings

x |" x 3f64")x 3164")

Brake anchor plateBrake cam completeFulcrurr pirr

Brake shoe completeBrake shoe springBrake shoe liningRivet - brake shoe liningHub complete with spindle andGrease retainer - left innerBearing (Hoffmann 120)

Grease retainer - left outerCirclip - grease retainer, Ieft . .

Spoke - leftSpoke - leftSpoke - outer, rightSpoke - outer, rightSpoke - inner, rightSpoke - inner, rightBalance weight - shortBalance weight - long . .

Pivot pin - brake cable to leverSplit pin - brake cable pivot pinGaiter - front brake cable

II

2020

l0

l6II

I

10

l010

as reqd.as reqd.

III

39

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Page 40: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 11

?'u

ll@

^ zalr"@6

l

32

lsL

I

ttF*

Y@l

Ei-1fl

40

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Page 41: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 11FRONT WHEEL 8' BRAKE

Plale Spures,lloclel Ref. llumber Descriptictn

PerSet

l.1

-t.

1.

6

7.g

9.

10.

11.

12.13.

14.15.

16.

t7.18.

19.20.21.)'l

?1

24.25.26.'r1

27.28.29.30.31.32.33.34.35.

57 02E0

31-123737-065331 -t48137-3E4831 31966A-263231 -319137-0653

-71,315937-38 1 7

60-259437 3816

31 3126

19-7't4527-68t037-378519,114319-11 44

19-7142t9 1141

37-376237 -37 6t37-205860 263960 234037-386831-3861t4 1303

60-234061-064537-3914t4-163537 365519,746619-746137-3932*31*4014*37*3969*37-3910*

Ciri.lip grease retair.rer, leftGrease retainer lett outerBearing - left (Hoffmann 120)

Grease retainet' left irrner

Hub with spindle and bearingsWheel spindleCirclip - grease retainer, rightGrease retainer - right . .

Bearing right (Hoffnann 120)

Lock ring - bearingSpoke right. outerGrommet - brake drum

It0I

l0

I

;IIII2

I

1

I2

l0II

. . as reqd.

Spoke - right, innerSpoke - leftSprir-rg - brake shoeSpoke nippleWheel rirn - WM2-18Abutment - liicraln adjuster (Lockheed 25241)

Brake shoe cornplete (Lockheed 4523-166)

Micrarn adjuster (Lockheed 3135 514)

Cage - brake adjuster (Lockheed 25253)Tappet - brake cam'O' ring - brake tappetLocknut - wheel spindle'O' rir-rg - brake catnBrake lever complete - front . .

Bush - cable to lever, frontBush - cable to lever, rearLocknut - anchor plate to forkWasher - anchor plate to forkWasher -- cable to lever bushBrake lever complete - rearStud, anchor plate to forkBrake anchor plateLining - brake shoe

Rivet - brake shoeDistance piece - inner side of right bearing . .

Spring - brake lever returnBalance rveight - short

20

2

40I2

2

2

2

2

2

Balance weight - long . . as reqd.

*Not illustrated

4l

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Page 42: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate L2

+

%

4I

ditr

t-

l-l(l-li

)

ELi)-_--,,\rtz

42

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Page 43: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 12REAR WHEEL AND CHAIN GUIDE

Plate Sparestutodel Ref. Nuntber Description

PerSet

T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.

SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H,T.SS.H.T.SS.H.T.

SS.H.T.SS.H.T.T.SS.H.T.

SS.H.T.SS.H."T.SS.H.

T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

SS.H.T.SS.H,T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.

37 375237-065337-374914 0207

37-374119-870119-87023t-390760-232014-l 301

3t-375337 065337-165437-3t 51

31-3750l9-922419-922337-397737 346827-681037--118437-378537 3726

37-372537-372414-130783 2266r4,r30360-233 1

31 3877

14-03056A-243183-352331-146737 3880

37-385160-1 841 *

54 4302*31-381237-387037-392531-392665-59044r-6078t9-114042 584083-2022

x 18)

x 18)

1.)3.4.

6.6.1

8.9.

10.

11.

12.13.

14.15.

15.

16.

17.18.

19.

19.

24.21.))'t1

24.t{26.'r1

?8.29.30.31.It33.

II1t

5

III

I5

5

1

I1

I1

IIi2

401

I20

III1

1

IIII

IrI

I2

2

2

34.35.

36.37.38.39.,10.

41.42.

Lock ring - left . .

Bearing - Ieft (HoSupport ring - Ieft

ffir,ann 120)

Bolt - sprocket to hubSprocket 52 teeth - rear rvheelChain - rear (i" x l" >< 1A7 pitches)Chain -rear (f" x *" x 108 pitches)Hub - rear, rvith spindle and bearingsWasher - sprocket to hubNut - sprocket to hubSpacer - bearingBearing - right (Hoffrrrann 120)Grease retajner - rightRing - speedometer driveDistance piece - speedometer driveSpeedometer drive - gearbox 2l/10Speedometer drive - gearbox 2/l

heelSpindle - rear wSecurity boltSpoke nippleRin - (WM3R.im -(WM2Spoke - rightSpoke - left, outerSpoke - left, innerNut rear rvheel spindleWasher - rear wheel spindleNut - brake leverWasl-rer - brake leverBrake leverNut - torque anr to brake pivotWasher - torque amr to brake pivotTorque amrBrake rod pivot pinReturn spring - brake leverBrake anchor plateGrease nipple - brake plateWasher - grease nippleBrake cailBrake pivotBrake shoe complete (leading)Brake shoe complete (trailing) . .Spring - brake shoeBrake pivot pad ..Brake shoe liningRivet - brake shoe

Torque arm and chain

10

l01

1

III

guide16

I

'tNot illustrated

www.bsaunitsingles.com

Page 44: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 13

^'-G

os------------o

l

29 28i

27

----l

^ffi'+24

Lry

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Page 45: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate tr3MUDGUARDS AND HANDRAIL

Plate Spares,l[oclel Ref. Nwtber Description

PerSet

H.H.H.H.H.

SS.

SS.H.SS.H.SS.H.SS.H.

T.SS.H.T.SS.H.T.SS.H.T.SS.H.

H.H.H.

T.SS.H.T.SS.H.T.SS.H.T.SS.H,T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

SS,

SS.

91,407 5

t4-01149t-415460 2348t4 611460-324260-234814 130283-28349A-62t960 3398

4A 344497-412197-405291 4021

97-442260-2427l4-0103I 4-01016J-ZlO3I 4-0r 0rl4 1301

83-2728t4-130r60-232983-272627 8560r4-r30160 232927 8560l4-0r0r83-2727t4-l 30r14 6101

83-3254l4-0r0rI 4-01 0lI 4-1 301

27-856083-321283-269314-010283,311419-133960-33 I 3

97-221082-8245

1.

2.

3.

4.

6.,|

8.q

10.

11.

12.13.

13.

1,4.

15.

16.

17.18.

19.20.21.'t',t1.,A

t<26.)1

28.29.30.31.1t33.

34.35.36.37.38.39.40.41.42.43.44.

Bracket - front rludguardBolt - nudguard to bracket (S" u.N.n. x f")Front rludguard completeWaslrer - bracket to botton yoke (21164" x ]" x 364")Bolt - bracket to bottorl yoke (fr" u.N.c. x f")Grolnmet * mudguard fixingWasher - bracket to r.nudguard (21164" x ]" x 3164")Locknut - bracket to ntudsuard (i5o" u.N.r.)Front number plateWasher - front number plate fixingNeoprene washer - front r.rui.nber plate

untlng

fixin-e

I

)I

2.,

2

2

2

I2

2)Screr,v - front nunrber plate firing

Front rludguard completeFront mudguard cornpleteRubber bush - mudguard stayBracket - mudguard stay to forkLockwasher - rrudguard stayBolt - mudguard stay (f" u.N.r. x f")Bolt - r.nudguard to frame (]" u.N.n. x J")Rear mudguard . .

Bolt - mr,rdguard fixing ({" u.N.E. x l")Locknut - bracket to mudguard, lower (f" u.N.r.) . .

Bracket - number plate mountingLocknut - rrulnber plate rrounting (*" u.N.F.)Wasl.rer - number plate mounting (17 164" x #" x #")Rear nunrber plateWasher -mudguard fixing(17164" x *" x 3l6a')Locknut - mudguard fixin-e (i" u.N.r.)Washer - bracket to rludguard, lower (17 164" x *" x #")Waslrer - rrrudguar-d to frante (17 164" x ;" x 3164")Bolt - bracket to mudguard, lovrer (l-" u.x.n. x 4")Bracket - number plate nrourrtingLocknut - ntudguard to frame (f" u.N.r.)Bolt - lamp mounting bracket, lront fixing (f" u.N.c. x J")Triple "C" washer - lanrp bracket to mudguardBolt - nunber plate fixin-q ({" u.N.r. x +") .

Bolt - Iarnp nrounting bracket rear fixin_e (f" u.N.r. x 1")Nut - support rail and number plate bracket (f" u.N.r.)Washer - support rail and number plate bracket (17 164" x #" x #")Rubber beading - lampBracket - rear lamp mo

mounting bracket

Bolt - support rail and number plate bracket (f" u.N.n. x f")Support rail - rear nudguardReflector - rear, sideSpire nut - rear lamp mounting bracketBrake cable retainer - front mudguard (not illustrated)Starlock washer - brake cable retainer fixing (not illustrated)

For colour finish code refer to page 5.

iI4

4

4

11lI2

I

1I+

I1

I2

12

I

+

I1

4

2

2

2

II2

I2

I

II

45

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Page 46: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 14

_42a I

5t

?a

3-7

36 -ll

,Y ,-I -t*'' g

l/-- --- tl

l9

20- -- €) I2l-- ,-- 19 t

22----- --$

il-,3

,o

z3

4

/' -- --- 8

www.bsaunitsingles.com

Page 47: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 14PETROL TANK, TWINSEAT AND CONTROLS

Plateilfodel ReJ. Spares Number Description

PerSel

ts.S.A. NO. MAKERS NO.

T. 1. 6A 3657

ss.H. 1. 6A-3144

T.SS.H. 2. 60-3586

T.SS.H. 3. 60-3s8s

T.SS. 4. 60-2083

H. 4. 60 2082

T.SS.H. 5. 97-4112

T. 6. 97-4062

ss.H. 6. 97-4113

H. 7. 60-3075

T.SS. 7. 60-3390

T.SS.H. 8. 21-2048

T. 10. 60-2628

ss.H. 10. 60-3143

T.SS.H. 11. 19-7223

T.SS.H. 12. t9-7222

T.SS.H. 13. 40-86s7

T.SS.H. 14.

T.SS.H. 15.

T.SS.H. 16. 14-1301

T.SS.H. 17.

T.SS.H. 18.

T.SS.H. 19.

T.SS.H. 20.

T.SS.H. 2I.T.SS.H. 22.

T.SS.H. 23. 60-3158

T.SS. 24. 83-2621

H. 24. 83-3866

T.SS.H. 25. 60-2428

T.SS.H. 26. 2l-2109

T.SS.H. 14-0302"

T.SS.H. 27. 83-3040

T.SS.H. 28. 83-2800

T.SS.H. 28. 83-2801

Lever - clutch control . .

Lever - clutch control . .

Adjuster nut - control cables 2

Adjuster - control cables 2

Cable - clutch

Cable - clutch

Cable clip 4

Handlebar

Handlebar

Cable - front brake

Cable - front brake

Pivot pin - control levers

T.SS.H. 9. 19-1332 39596 Srvitch assembly - right hand .

Lever - front brake

l-ever - front brake

Throttle control ..Rubber grip - right handlebar

Cable - throttle control

16/008 Friction spring

I 6/091 Rotor - throttle control

Nut - self locking ]" u.N.F. - pivot pin 2

I l/013 Clamp screw

161328 tsody - top half . .

161329 Body - bottom half

l6/010 Nut - friction screw

16/009 Screw - friction spring

161011 Cable stop - throttle control

Transfer - petrol tank . 2

Twinseat ..Twinseat ..Spring washer - seat bolt(39164" x 11f32" x +") . . 2

Stud - seat fixing

Nut - seat fixing (fi" uN.r.)

Petrol pipe

Petrol tap

Petrol tap - reserve

For colour finish code refer to Page 3*Not illustrated

47

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Page 48: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Ptrate [A-Continuecl

ii 1I

,.---42\J

,l-*

sp\

,'Salm-.\ \t/ \'1.V

54

zo _€zr___'-s22-- --$

48

www.bsaunitsingles.com

Page 49: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 7,4-ContinuedPETROL T'ANK, TWINSEAT AND CONTROLS

Platelllodel ReJ. Spares l,lumber Description

PerSet

T.SS.H. 29.

T.SS.H. 30.

H. 31.

ss. 31.

T. 32.

H. 32.

ss. 32.

H. 33.

ss. 33.

ss. H. 34.

H. 35.

ss. 35.

ss.H. 36.

ss.H. 37.

SS,H. 38.

ss.H. 39.

ss.H. 40.

ss.H. 41.

ss.H. 42.

T. 42.

T. 43.

T. 44.

T. 45.

T. 46.

T. 47.

T. 48.

T. 49.

T.SS.H. 50.

T.SS.H. 51.

ss.H. s2.

T. 52.

s.s. 53.

H. s3.

T.SS.H. 54.

T.SS.H. 55.T.SS.H. 55.

B.S.A. NO. MAKERS NO,

83-0002

70-1351

83-3 1 80

83-3056

83 2652

83-2998

83 3050

83-3042

83 2776

02-0370

4l-801 I

40-8066

68-80 I 3

68-80 r 9

82,9182

42,8017

68-8016

2t-1999

83-3068

83-3069

l4-1302

03-0101

76 4120

40-8085

82-3017

83-2776

82-9195

19-7221

19-1333 39595

82*3220

83-1541

83-305s

83-3t79

82-9222

83-298083-3563

Washer - petrol tap

Sealing lr'asher - petrol tap

Trim strip - petrol tank rear

Trim strip - petrol tank rear

2

2

Fetrol tank

Petrol tank

Petrol tank

Bolt - petrol tank centre fixing

Bolt - petrol tank centre fixing

Washer - petrol tank centre fixing (15/64" x37 f 64" x3164")

Distance tube - petrol tank centre (11/32" x15f32" x 2$")

Distance tube -petrol tank centre (11132" x15f32" x 7]")

Rubber ring - petrol tank mounting . .

Mounting ring - petrol tank centre

Trin-r strip holder

Mounting rubber - petrol tank centre

Washer - petrol tank centre bolt (29164" x29f 52" x +")Nut - petrol tank centre bolt . .

Grommet - petrol tank centre

Grommet - petrol tank centre

Nut - petrol tank centre bolt (fi" u.N.r.)

Washer - petrol tank centre bolt \21164" x 11" x3132") 2

Distance tube - petrol tank centre (l 1132" x7 f 16" x l")Mounting rubber - petrol tank centre

Distance collar - petrol tank centre .

Bolt - petrol tank centre fixing

Tapered washer - petrol tank centre bolt

Rubber grip - left handlebar . .

Switch assembly - left handlebar

Filler cap - petrol tank

Filler cap - petrol tank

Trim strip - front

Trim strip - front

Rubber - petrol tank anti roll . .

Rubber - petrol tank frontRubber - petrol tank, rear

For colour finish code refer to Page 3

49

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Page 50: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

'r@CKsr/Qijp -/@-u,

aa+

n6sll ..uut^&l\ "'/**-

\( s*

trre

www.bsaunitsingles.com

Page 51: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 15 ELECTRICAL EQUIPMENT

Platelul odel Re.f . Spares Nuntber Description

PerSel

T.T.SS.H.T.T.SS.H.T.SS.H.

SS.H.T.

SS.H.T.

T.T.

SS.H.SS.H.

T.SS.H.

T.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.FI.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

B.S.A. i\"O.

1. r9 9r0ll. 19-91022. r9-89532. 19 9104+

3. 19 8961

4. 60 25964. 60-26005. 97-4023s. 91 4026

t9-8952r 9-895819-895119 8954I 9-908060-259660-260091 402319-909819 9t02

r 9-t 094

\{AKERS NO.

5495962654959625RSM3003/13RSM200i/02

ssM5007i03ssM5007i02ssM2001i08ssM200r /07

Light lead - tachometer, 80 mm. (optional extra) 1

Light lead - tachorreter 60 mnr. (optional extra) I

Tachometer 80 mm. (optional extra) I

Tachometer 60 mm. (optional extra) I

Cable - tachometer drive (optional extra) 1

R.ubber cup - tachometer 60 mr.r-r. (optional extra) . . I

Rubber cup - tachometer 80 mm. (optional extra) . . 1

Mountin,s bracket - tachometer 60 mm.(optional extra) I

Mounting bracket - tachometer 80 rnm. (optionalextra) 1

6.

6.

6.

6.

Speedometer - 80 mm. (k.p.h.)Speedonreter 80 mn.r. (m.p.h.)

7.1

8.

9.

10.

11.

11.

12.13.

14.15.

16.17.18.

18.

19.

20.21"21.21.))23.24.t<26.27.

28.29.31.32.33.34.35.36.

19-r 088

19-1064

l9 1095

54959625

28r60262144921

53429653434354525272504665

371

55460231216

5436345454363455s436345354525212989

5451359035048

54420t2854959532

Speedometer 60 mm. (k.p.h.)Speedometer - 60 mn.r. (m.p.h.)Trip shaft -- speedometer (80 mm. only)Rubber cup - speedorreter 60 r.nrrr.

Rubber cup - speedometer 80 mm.Mouuting bracket speedonreter 60 n"rr.n.

Cable - speedometer driveLight lead - speedometer 60 n-un.

tsulb - speedometer and tachoneterBulb - warning lightsHeadlamp-complete..Screw - headlarrrp rin fixing . .

Plate - headlamp rirr-r fixingHeadlamp rin.r

Light unit - headlamp . .

Wire clip - light unit fixingBulb - starrdard rnairr

Bulb - main for FranceBulb holder - mainLighting switchOil pressure warning light body - redMain beam warning light body - green

Direction indicator warning light body - amberRubber cup - warning lights .

Bulb - pilotBulb holder pilotFlasher ulit -8FL.CondenserHarness - headlan,p to electrical boxBolt - electrical box cover $" u.N.c. x +") . .

Spring washer - electrical box cover . .

Top cover - electrical boxMounting bracket - electrical box rear fixingNut - electrical box bracket (21164" x #" x +") . .

Nut - electrical box bracket (S" u.N.E.)Zener diodeRubber moulding - condenser, capacitor and flasher

unit

1

1

IIII

4II

I

I

t9 1079

t9 1847

19-1 096

14-610129-054t83 3811

83-38 I 3

14-040114-130219-173519-1077

1

44II2

2

14934ss4422860

51

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Page 52: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate l1-continued

$;ffiN3.('i"r .A=\W " \Ni-'-]\\ -',= 1o

R:J/eutut-S.\=z (-)\ffi \/i7d

@-,,

i #^ Plt

-:'O,t/.'t 16

LL/15rrr /;',,R(/iil{ N\\\t\\\\l

*,V\

WW:!

-$';'q H

RM

tr--@-\@-d-t

[-." *'

\r

www.bsaunitsingles.com

Page 53: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plafe lj-ContinuedELECTRICAL EQUIPMENT

PlateModel Re.l'. Spares Number Description

PerSet

B.S.A. NO.

83,266916-029329,331921-2067t9-t33219 I 333

l9-133519-t3311 9-1 334

97,424883-3525

19-1068l9-1067I 9-190482-698 I83-380883,267016,029321-1930l9-18582t 2061

29 3319

MAKERS NO.

T.SS.H.T,SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.F{.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

H.T.SS.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

T.SS.H.T.SS.H.

3959639595

54115246

5434088 r

s403366754033666545824t55458241454580300554548

s73832382

4558 I 638

56147

3956s1-6280

17

38.39.40.41.41.42.43.44.45.45.46.46.47.48.49.50.51.52.53.54.55.50.3/.58.59.60.61.62.63.64.65.

66.66.67.68.69.70.71.72-

Plate - capacitor supportPlain washer -- capacitor moulding (13164" x *" x #")Shakeproof washer - capacitor mouldingScrew - capacitor mouldingSwitch assembly - right handlebarSwitch assernbly - left handlebarScrew - handlebar switchWasher -- handlebar switchLever half - switch assembly left and right .

Switch half - switch assembly, right . .

Switch half - switch assen,bly, leftTube - flasher lamp ntounting, front . .

Tube - flasher lanrp nrounting, rear . .

Gasket - flasher lanrp .

Bulb holder - flasher lampInterior assembly - flasher lampBulb - flasher lampLens asser.nbly

Flasher lamp - completeSwitch - ignition and lightingLock and key - ignition and lightin-e switch. .

Elec.trical boxTerr.ninal clarnp stripWasher - terminal clarr-rp strip (13164" x i" x #"). .

Screw - tenninal clainp strip . .

Capacitor . .

Screw - coil fixingShakeproof washer - coil fixin-eCoil clampCoil - ignitionRubber gromnet - H.T. lead . .

Clip - H.T. lead contactHigh tension leadHigh tension lead

Clip - battery vent pipeVent pipe - batteryNut - horn fixingWasher - horn fixing studHorn - 6H high noteBolt - horn fixingClip - speedometer cableBracket - flasher light mounting support (inside

headlamp)Nut - flasherHarness earth

I

2

2

2

II8

8

2

II

2

2

4

44

4

441

II1

2

2

54 I 70009

544t99141 9-r 88r 4s221

549490114218635495646654956424

66-834068-9 I 63

14-r 301

60-242719-2086 1022814-0r 01

83 3543

9l-424'7

14-0404t9-1359 54960702

light stanchion (inside headlamp)lead

2

2

I

III

I

I

1

1

2

2

1

2

I

I21

53

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Page 54: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate lS-Continued

)+

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Page 55: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plafe tS-ContinuedELECTRICAL EQUIPMENT

PlateModel Re.f. Spares l{umber Description

PerSet

T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T,SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.T.SS.H.

B,S.A. NO,

29-054182-7044r9-09r690-62t960-242675-020819-17 t541-9A30l9-133821,2073

t9-124519-12491 9-1075l9-108019-177660-337t60-33122t-212860-362102 092383-38 l414-010114-010260-23291 4-l 301

MAKERS NO.

34815

49012

57160

1107141 883305457 1677

57382854525286380

54517109144921

53973188218

549594805495968054021029

73.74.75./o.77.78.79.80.81.82.83.

84.85.86.87.88.89.90.91.92.93.

Shakeproof washer - earth lead to horn boltDistance piece - stop switch rnountingStop switch - rear, 1 l8SAWasher - stop switch fixingSpring rvasher - stop switchSclew - stop s$ itch fixingRectifierClip - stop switch cableReflector - frontScrew - reflector fixingScrew rear larnp fixingWasher - rear lamp fixing screwGasket - rear lamp lens backingInterior bulb holder - rear lampBase plate - rear lamp .

Bulb - rear lampLens - rear lampScrew - lens fixingRear lamp completeFuse - rnain harness (35 amp.)Main harnessHarness - electrical boxBattery (not illustrated)Cable clips - colour grey (not illustrated)Cable clips - colour grey (not illustrated)Shor"rlder bolt - electrical box . .

Grommet - electrical boxPlain washer - electrical boxMounting bracket - electrical box, frontBolt - electrical boxBolt - electrical boxWasher - electrical boxNut - electrical box

2

4)2

I

66

J

J

J

1

2

2

44

fSee page 5 for tachometer kit complete.

Note:-Where no B.S.A. part number is quoted, the part is only available from the maker.

55

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Page 56: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 15

8I

P

56

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Page 57: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

I

Plate 16TOOLS

ModelSparesNutnber

PerSet

PlateRef. Desuiption

lj

I

l

1

1.

.,

3.

4.

5.

6.

7.

8.

9.

10.

6s-9132

60-0767

6A-3641

68-9464

60-2184

40-9017

60-19l I

68-9467

42-9213

75-9089

60-2114

60-2084*

60-1907*

Spanner

Screwdriver set

Ring spanner - large

Plug spanner ..

Damper unit 'C' sparrner

Box spanner

Tomrry bar

Tyre valve key

Licence holder complete

Tool roll

Tool roll complete with tools

Open-ended spanner

Ring spanner - small

*Not illustrated

57

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Page 58: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 17

/26

fOr,-

s *__:_zro t'l

58

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Page 59: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

Plate 17CARBURETTER

PlateModel ReJ'. Spares Nuntber Description

PerSet

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T,SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T"SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

T.SS.H.

Note:

B.S.A. NO. MAKERS NO.

1. 19-3093 6221086

2. 4lt73A

3. e281097

4. t9-314t 6221131

5. r9-309s 6221067

6. t9-3131 6221124

7. 19-3108 9281060

8. 19-3136 6221122

9. 6221128

10. 19-2880 3161100

11. 622107t

12. 19 3105 6221068

13. t9-3143 62210s5

14. 19-3048 3161093

ls. 19-3103 6221078

16. 19-3141 6221141

17. 622lt5t

18. 19-3093 6221086

19. 19 3102 6221069

20. 19 3106 6221013

21. 6221077

22. 6221076

23. 19-3098 6221082

24. R928

2s. 19-3090 6221t01

t9-2432 Pt928120

7 l-1 860

60,3s36

19-2834

Screw and washer - top cap

Screw plug -top cap

Cap - rnixing chatnber

Spring - throttle

Clip - throttle needle

Needle - throttle

Throttle slide (No.

Needle jet ('106) . .

Jet holder

Main jet - 200 cc.

Float spindle

Float needle

Float chamber

Petrol filter

Banjo bolt

Drain plug

Washer - drain plug

3/2 cut-away)

washer - float chamber to body

2

1

1

1

1

1

1

1

1

I

I

I

1

1

I1r

I

2

I

t

I

1

2

1

alr

Screw and

FIoat

Gasket - float chamber

Screw and throttle stop

Ad-iusting screw - pilot

'O' ring - pilot air and

Carburetter body

throttle stop screws . .

'O' ring - carburetter flange

Carburetter cornplete

Adaptor ring - carburetter to air intake

Jubilee clip - carburetter connector . .

Fibre washer - banjo union

- Where no B.S.A. part number is quoted, the part is only available from the makers.

1

I

I

I

1

59

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Page 60: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

NUMERICAL INDEX

PlnrNo-

PrcrNo.

Krv No.No. Orr

PrnrNo.

PrcrNo.

KrvNo.

NoOrr

P,tnrNo.

Pacs Kry No.No. No. Orr

00 316800-33 1000,5 I 9500-7009

02-01 3002-037002 052502-0s25o2,052502 092302-092302,092302 092342,2t3802 213802-2t3802 213802-21 38

03 0r0l

1 4-01 01

14 0101l4-0101l4 0t0114-0101l4 0l0lt4 0101I 4-010214 0102l4-010214 0103l4-010314-010314-01 l314 011414-01 14I 4-01 14

14 0lt4l4-0126t4 0134t4-020714 0208t4-02t614-0216l4-02r814-022114 023414-023614-023914 0239t4-030214430214430214430214-030214 {30314-O305l 4,040114-0401r 4-040114440314440414-t01914-120314-1301

5 ..5 ..5 ..5 ..

13

4913

15

15

l517l155

931

31

3535

49

45454545455355JJ

55453l334531

2731

JJ

452739432l31

3l3l2929352737

915

17374713

4325335t9

533t352l

14-l 301l4 t30l14-1 30 ll4,l 301I 4-1301l4-l 301

14-1 30114-l 30114 130114-1301l4 1301

l4-130114-1 30114 t30214-130214 130214-130214 t30214 t30214-130214 130214-130214-1302t4 1302l4-130214 130314-1 303l4 1303l4 130314-l 30314 130314-l 30314,1 30314-l 30314-l 30314-l 303l4-l 30314 130314-1 30314-130414 1304t4-t30414 130714-1401t4-1606l4-r6t914-162914 163514-1901l4,l 90114-1901l4-1901t4-2203l4-6r0114-6101l4-6101t+610214-611414-62t914-62t914-622114 660614-660614-660814-661014 661014-6610

272131

JJ

434545454545475355

91l27272931

31

3l31

3345492727272729293l3l3l3539394t4-t2939394315

15

1l9

4l13

l5l515

3l29455l15

45l73529192t2319192l

60

.. 37

.. 14

.. 7

9.. 21

.. 23

.. 2T32

.. 3t

.. t6

.. 69

-,. )48

.. 27

. . Jt)

.. 12

'.-.. ).. 21. -)t

14-661014 661114 661114-661214 66t4i4-730814 7804

I 5-51 55

I 9-09 1619-106419 t067r9-106819-l 07519-101119 107919-10801 9-1088l9 t0941 9-109519,109619 124519-1249l9 126219-t332t9 13321 9-r 33319,1 33319 133419-l 33519 1337l 9-1 33819-l 33919 135919-171519-t'73519-177619-1847r9 184919-l 85219,1853l9 185819-1881t9 190419-208619,2403t9 243219-2834l 9-288019-3048I 9-309019 309319-309319-309519-309819,310219-310319-31051 9-3 10619-310819-313619-313'lt9-3t4119 314319-3144l9-4589

..

l0344 ..

637l81

8590

8 ..9 ..

16

1626

11++

18

203035

-ttt72

4 ..

4l15

14l7322t35

2 ..4 ..

l14 ..

48J -.

26

9 ..2817

,. 7

2

21

2

5

24I422i47

2

42I

1

22

2

22I2

II2

I4I1

2

21

II4I2

2521

252l2t3525

3l

555l5353555l5l555l5t51

5l5555l1A1

534953535353554553555l555l19t919

535353535l

5

59595959s959s95959595959595959595959JJ

5

I43

II1

II+4

.2

.60

.7

.61

.62

. 3l1A

8 ..43l1222931

5 ..258 ..

l923l5l61928259 ..9 ..

13

23544551

t9323 ..

46657030283328

5

864

261971

97l722'70

36

7418

525t92362593l6t22021909l989 ..

4l5l4l45444580

.. 78 :.

.. 3s

26.. 42.. 44

4t.. 59

6353

.. '71

6 ..

10t425I ..

18

5 ..2319

l5l220'7 ..8 ..6 ..4 ..

13

t643

z1

22

26222 ..

l0363 ..

809144

4I5

II41

2J

4I21

I41

I

2

21

2

472556

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Page 61: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

NUMERICAL INDEX- cont inue d

KEv No.No. OrE

PanrNo.

PlcENo.

P.lcr K-sv No.No. No. Orr

PlnrNo.

KEv No.No. Orr

PenrNo.

P.qcBNo.

19 459019-459219-4593t9-459419459519-530519-650819-722119-'722219-722319-745419,'745819-746619-746719 '7606

19-762519 770119-7'74019-774119,'774219-774319-7744t9,774519-801919-861319-86981 9-870 I19-8'70219-895219-8953t9 895419 895'7I 9-895819 908019-909819-910119-910219-9tOzl9-9103t9-9104t9-922319-9224

21 05'782l-059'/2l-06712t-075521-180921-187221-18902l-18942t-18952l-18962t-19302t-19432t-19s121-198521-19992l-201521-201,62l-20422t-20442t-20452l-20482l-206021-2061

4t3839404l23

50t2ll2l2034352 ..1 ..

274021

20t819

1597276 ..6 ..6 ..6 ..2 ..6 ..6 ..6 ..

3333JJ

33JJ

293 ..

49474129294l4l

99

39434l4l41414ll'72543434351

51

51

51

51

5l51

51

5l51

5l51

4343

222

10

1

1

22222221

I1

1

III1

1

1

1

II

1

1

III1

I2II21

21

I1

2

22I1

22I

21

224221

8

1

21

2J

2221

II22

222I

t62

39393943434l43

5

43434J434343394t4l4t

5

5

4341+-)

5

5

5

3939t941394l393939414141

43414L

4343434339393939434l4143434l3939434l

21-20622t-20632t-20672l-206'l2t-20732l-20't721-20922t-209421-210221,21052l-21092l-2t112t,2ll'l21-21282l-213321-2t3421-213724403624-072424-073224-108824-s160

2'7 567627-681027,68102'1-681027-856027-856027-8s6027-8560

29 0541294s4t29454129-054129-205329,205429-208929-331929 331929-331929-38s729-585329-7583

37-065337-06s337,065337-065337-065337-065337-123737,123737-146737-148137,148137-165437-1'.7983'7-205837-20583'7-208537-346837-3s8437-365537-369437-3695

35395353552911

31

37294'7

15

15

5511

11

2'/t61l9

299

353941+J

JJ

454545

1,3

JJ

51

13

13

1l21

535321

393l

39394t414343394l43394t43l3194l274339413939

6l

18

l5406081

8 ..7t22482 ..

26,:

..

68'70

4913

4I35

21

2tI

l618

6262938

37

29

"7

3l3

92

11

322

31

304

1,2

352t2415l7

3

33l836

37,369637-369737-370437-37243'7-37253'.7-372637-372637-373537-3'74137-37493"1-375037-37st37,375237-3"t5337-375937-3'75937-376137-37623'7-378037-378137-3'7843',7-378537-378s37-379t37-3'19237-379337-379337-379531,319637-379637-379'737-379737-3'79837-379937 380437-381637-38t737-384837-385137-386737 386837-387037-38723't-381737-388037-389237-389337-389431,389537-390737-391337,391437-392537-392637-393237-396937-39-1037-397737-40r4

40-002040-{02540-002840-00644H0654M06640-0069

353422'))2lt420

1020I

l0102020

5

3

t413

1

108

102322

)q.. 2.. 4.. 6

68

)L-. zJ

2513

l1.. 5. . JJ

2'7

2'7

.. 25

.. 342'l32

.. 2363534

7263l3637

.. 2,. 10.. 10

22

2.. 40.. 40.. 40.. 2.. I.. 4

2

.. 1

24

I2

5751

3961

88282935

15

27273513

l5l'7l317532525l54927

9l7l931

472'l2',7

11

4520t48 ..

2075946 ..

9358209 ..

t5412631

89231l8 ..

4213

.. 1010

.. 20

3'7

31I ::

238 ..

15

34343434

2III

10

913

t99999

www.bsaunitsingles.com

Page 62: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

NUMERICAL INDEX-cont inue d

Knv No.No. Orr

PlnrNo.

PncrNo.

Krv No.No. Orr

PacENo-

P.lnrNo.

Knv No.No. Orr

PanrNo.

P,lcENo.

40-015740415740-015840-02104M2224H.236&-024240-024340-024640432'74H3'7s40-0385404394404414,+(}-0455

40467940-06824M68340-070540472340-086240-086540-089240-090740-091740-091840-091940,093340-094640{96540-096640-096840496940-097740-099340-100540-100740-10r040-t02140-103040-r03140-103340-103740.2',70540-300740-301940-302040-303240-303340-304240-304340,304440-304440-304540-305140-305940-306140-307340-308440-308540-31 1940-312040-3t2140-312640-312740-315040-3 I 55

40-319340_31944U320640-320'.740-321040-322040-322140-322740_323r40-323340-323440-326240*326540-327240-327340-327740-328240-328340-329140-329240-329240-332140-332340-333040-485040-806640-808540-832240-832340-833140-865140 9017

414t4341-014641*056041-056'741-0s6941-06034'l-060941-062441-067341-0706414'71541-304541-30s441-306341-30684r-30'704t-30'7241-307441-307841-308941-309241-309541-320941-321241-321541*607841-801 1

41-831241-831341-831441*83 I 641-831',7

.. lo7

.. 10528JJ371215t621,

13

1478

.. 1133029382640

.. 1007684

'7

.. 104382t3546343s31

13

.. 6

95963256JJ3848584252t3

. . 11,4

8693828583838l9444

3526223935

.. 2524232026

42-015742-492542-583642-584042-655442-801',142-9273

47 9030

53-3049

5P.3025+8006

57-028057428057-094857-216657-233057264151-264257-2750s7-276357-376357-376457-385057-3854s7-38725't-38'7457-38'.7657-387757-393157401957412157418657418957419757-4197574198s7420057-43365743385',7-4339574341s7-434257-4341s74344s't-43s'l

60 076'760-184160-184160-190760-19t I60_208260-208360-208460,211460_218460-232060-232060-232260.232960-232960-23296U2329

353l3943214957

55

23

5'7

29435'l57A1

47\'7575'.7

2t432927294545

39 .. 3341 1

17 8725 1

2t 6421 632t 73t9 392t 6619619 3623 .. 10123 .. 1122t 892t 7923 9l2l 8025 3225 11

25 t925 342s 18

5 ..1<

25 3225 3019 31

21 1419 322t 7519 3',7

19 2823 9621 58

4t55399 ..

79

.. 102

.'

931

9l3192tt315

15

17l51913l313

t9192t13

191915l1l111

11

11

1l2799

11

l1191l25l1l3l311

91715

JJ

232321ZJ232323ZJ45ztl9t9t92l2T

21

2323192323252l

l12413

71,4

5923767892722l223634l84s46

5

4311

833844444444523416t765661256

6621tll40368868l59592909998

1101ll108

12109

28

5

5367689292

J

909031

106

23232525252525252525252l2319t9191,9

19232121

1923253l4949JJ

JJ

334757

l7179

15

13

13

15

151l1519232l2321212t2121,

2319192525254349JJ

JJ

JJ

3333

62

)I

25II5

1

I

2221

IJ

2I6II1

21

1

I)2I1

1

4I22221

1

2I221

1

1

21

1

4

221

1

2

4')

It6I1

1

1

5

I ..

45

4327 44

8

42

21

7 ..4 ..4 ..

5 ..578 ..

24483024J9,

5

421,

42

www.bsaunitsingles.com

Page 63: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

NLIMERICAL INDEX-continued

Knv No.No. Orr

PanrNo.

PecENo.

KEv No.No. OEr

PlnrNo.

PlcnNo.

Prce KEv No.No. No. Orr

PlnrNo.

60-232960-233060-233060-233160-23316V233160-233160-233t60-233260-23336V233660233860-23396c-234060-234'/60-2348602f4860-236360-236460 236460-239360-241760,242660-242'/60 242160-242'.760-242860-242860-243160-259460-2s9660-2s9660-260060-260060-260160-262860-263060,263260 263260-263960-268360-268360-272460,306560 307560-314360 314460_315260-3 1 5860-3 I 5960-316060-316160_324260-325760-325960-326160-33 I 3

60-337160-337260-339060-339860-353060-353660-358560-358660 362'760-3647

559

212739393943393s3535294l2'7

4545t9192l3l29553345533747434t51

5l5l5lJJ

4'7

35394t4l31

3923JJ

4747

394'7

33

-J -t

JJ45JJ

JJ

33455555474515s94747555'7

4 ..3532l4t'l2026l0l9

.. 309 ..

t1294l4 ..7 ..

)\.. 20.. 69.. 13

297617l670452529

.. 124 ..7 ..472

t020

51

25t2

ZJ10t230

632323244

60-3651

62-0263

65-590465-590465-9132

66-307466-307466 751866-8340

61464s67-t23667-128667,1391

68-028968-O33168 033r68-038368-066168-083968-093868-320368457768-4s9768-470868 492568-483568-505068-519168-801 3

68-801 668-801968 834368 911568-9 I 6368-946468 946'7

10-t670'70 3'75170-3'789'70-6026

70-683870-683970-686170 6869'70-'t351

701354'70*7777

70-77877 J.-779070-7"19t7(F-7820'70 791770-83 I 5

70-873770-877070-8'77070-877070-877070-877070-878270-8896

47

15

.. 394357

t925l553

4ll5t5

.. 15

192l31

15

11

251521

2727292731

359 ..

494949333353575'1

13

2715

239

.. 9

.. 99

.. 49

.. 2l

.. 9

.. 9

.. 9

.. 911

ll13

2t27272'7

272'.7

2513

63

70-926370-9381'70-9382

70-938370-938470-942870-9429'70-9430

70-9431'70-9sl'l'70 952670-9800'/0-9911'70,9914

70-9979

7l-1 0037l-10657t-l1477l-11487t-l1657t-l1667l-t2'717l-14167t-1,418'71-141971,-1,420'71,1422

71 14237t-1424'71-1425

71-167971-1 80171-1 81971-182071-186071-l 8617t-1869'71-1869

71 198971-202s7 1-21147 1-21151t-21197t-2122'71-2124

7t-212571-21767t-219671-21987l 22lO71-22237L-222671-2221'7t-2229

71,223071-22317t-223371-223571-22387t-22'.7371*22847l-22847t-22877t-22887t-229171-229'7

392341536l64875029775 ..

25495515

31

28

.2

.t

.l

.1as reqd.as reqd.

4I92

21

2II4

1

67

llt313

l3t313

13

l3l3l319

2511

11

15

il25l315

1lll21

11

2515

2513

2tl59

13

9l313

595

5

15

1l2531

13

13

15

l513

99

11

l31l95

13

13

11

95

11

21

5

911

1l1513

47l3l218

24l2l9l4l'715

24I

454659

2638I ..

3510

67

22

428

2

30826l49

9 ..4731

74544 ..

4'7

6540381 ..

8l287 ..

2036405t288 ..

684 ..8 ..

1

1

5

1

1

IJ

222I21

2

1

1

21

II2

..

84698 ..

JJ

433951

5044246 ..

672761

9 ..

40426025

.. 1032l'7 -.10I ..

.285

'79

.. 115262'7

.. 29303052

.. 10t418l249

2950

9l2192330252l

.: s312

JJ

43375730

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Page 64: 1971 zs$cmt models - BSA Unit Singles 00-5720 1971 B25...37-3848 37-3780 37-3781 37-3907 00-5220 ... Cylinder head with fixed fittings Inlet valve Fibre washer-oil pipe union Oil pipe-feed

NUMERICAL INDEX-cont inue d

PnnrNo.

P,q.oB

No.Krv No.No. Orr

P.q.nrNo.

P.lcENo.

No.Orr

KEvNo.

71-2366'71-2400

7t-2402^n241t71-2s137r-254511-2547'71,2656

7t-2658

75-01167541"767s-020875-025775^271975-272575-9089

'76-W276-010176427176429376-029376-0308764378"t6-0s28

764116'76-4120

82-301782-322082-46'n82-698182 704482-738782 824582-824582,890182-900482-922282 943082-978282-9795

83-000283-154783-196983-200483,200583r200683-200683,200783-20t283-201583-201883J02283-204083-220283J20483,220983-221183-221283*221883-222083-222483-222883-2233

11 5931 3431 3931 3413 2619 1,6

15 6015 6615 69

83224483-224583-226383J26683-261683*261783-262183-265283-266083-266983-26'7083-267183-267483269383-271683-272683-272783-272883-277683-2"17683-278583-280083-280183-283483-293783-293883-298083-298583-298s83-299883-301483-301 s83-301783-304083-304283,304683-305083-305583-305683-306383-306883-306983-307783,307883 307983-308083-308183-309283-309483,309583-316283-3 I 6583-3 I 7083-31'.7483 317983-3 I 8083-321283-325483-329683-352383-352583-354183,354383-355483-355683-356383-3605

29 1629 l745 t943 2431 18

31 .. 2547 2449 3239 1253 3753 5627 .. 4329645 4033 13

45 2545 31A< aa

49 3349 4833 .. 947 .. 2847 2845933 1

33 11

49 555-

27 'l49 .. 3229 .. 1431 1031 2047 2749 3327649 3249 5349 .. 31

27 2449 4249 4233 3733 .. 3633 1833 2-l33 1931 .. 231 .. 631 .. 429329429 1045 4249 5349 3l45 3945 3427 3343 3053 46JJJ5327 4527 1649 5533 16

64

22

.. 27.33.55

1931

31

5'7

28

7710

l0

92719535311

11

192549

494929535531

3745JJ

2749JJ4949

49492927a1

27JJ

352927274331

5

2735352931

31292729

L1

527 ..

54t)3837

223954JJ

3849

295218

8l'725292215

18J

4217

2l4121977

274713

22I

2',7

38575855

.. JJ

.. 3

.. 4s

222

2')

442

PrnrNo,

PecrNo.

KrvNo.

No.Orr

83-363883-372183-380883-381 1

83-381383-381483-3866

89-3208

9M0119U60749V621990-6219

9'747229'7-22669'7*22',709'.7-227097-368297-389397-389497-394797-39879'1-399697400197400297400397400497400797-400897400997401097401297402097-402197402297402397402397402397402697402697-402897,40299'.7-403197403297-403397-404897405097405297-406297,40759740769',1-411197-41129741,1,397-4t1597-411697-4127974154974166974173974247974248

31

JJ535l51

5547

2t

5

553132

224

19t94555

.. 35353545

.. 353737373537

.. 3737373',1

373t

JI

JI

.. Jt37454535

.. 51

51

3551

.. 373535373'7

353545474s37374'.7

5

3535454537475353

24:.54

341 ..

1075

6 ..1028

2943424627355051

3932525534384140l415I5

8

1

5

56-t

234949l717l361

JJ

535

.. 13 :.2413

3 ..546 ..

46

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