Sears 143.974506, 917.38783 owner manual KEY Part NO. no Description, Mcr

Page 19

CRAFTSMAN 4=CYCLE ENGBNE

MODELNUMBER143.974506

KEY PART

 

 

 

 

 

 

 

KEY

PART

 

 

 

 

 

 

 

NO. NO.

DESCRIPTION

 

 

 

NO.

NO.

 

DESCRIPTION

 

 

1

36774

Cylinder

(Incl. 2 & 20)

184

26756

 

* Carburetor

 

To Intake Pipe Gasket

2

26727

 

 

Dowel

Pin

 

 

 

 

185

36785

 

Intake

Pipe

 

 

 

6

33734

Breather

Element

 

 

186

87-138

 

Governor

Link

 

 

7

36557

BreatherAss'y,, (Incl. 6 & 12A)

!89

650839

 

Screw,

I/4-20

x 3/8"

12

36775

 

Breather

Tube

 

 

 

191

36559

 

S..E. Brake

Bracket (incL 195)

12A

36558

Breather

Cover

& Tube (incL 12B)

195

610973

 

Terminal

 

 

 

 

12B

36694

Breather

Tube Elbow

 

207

34336

 

Throttle

Link

 

 

14

28277

Washer

 

 

 

 

 

 

209

30200

 

Screw,

10-24 x 9/t 6"

15

30589

Governor

Rod (Inclo 14)

215

32410

 

Control

Knob

 

 

16

34839A

Governor

Lever

 

 

 

216

33086

 

R.P,M

Adjusting

Lever

17

31335

 

 

 

 

Governor

Lever

Clamp

223

650451

 

 

Screw,

1/4-20

x 1"

!8

651018

Screw, Torx T-15, 8-32 x 19/64"

224

36786

 

* Intake

Pipe Gasket

19

36281

Extension

Spring

 

 

238

650932

 

Screw,

10-32 x 49/64"

20

32600

Oil Seal

 

 

 

 

 

239

34338

 

* Air Cleaner

Gasket

30

36793

Crankshaft

 

 

 

 

24!

35797

 

Air Cleaner

Collar

40

40004

Piston,

Pin & Ring Set (Std.)

245

35066

 

Air Cleaner

Filter

 

40

40005

Piston,

Pin & Ring Set (o010" OS)

250

35065

 

Air Cleaner

Cover

41

36070

Piston

& Pin Ass'y. (Std) (lnclo 43)

260

36980

 

Blower

Housing

 

41

36071

Piston

& Pin Ass'y,

 

261

30200

 

Screw,

10-24 x 9/16"

42

40006

(.010" OS)

(incL 43)

 

262

650831

 

Screw,

1/4-20 x 1/2"

Ring Set

(Std.)

 

 

 

275

36790

 

Muffler

(Incl. 277)

42

40007

Ring Set

(,,010" OS)

 

277

650988

 

Ring

 

Screw,

I/4-20

x 2-5/16"

43

20381

Piston

Pin Retaining

285

35000A

Starter

Cup

 

 

 

45

36777

Connecting

Rod Ass'y.(lncl. 46)

287

650926

 

 

 

 

 

Screw,

8-32 x 21/64"

46

32610A

Connecting

Rod Bolt

 

290

29774

 

Fuel Line

 

 

 

 

48

27241

Valve Lifter

 

 

 

 

292

26460

 

Fuel Line Clamp

 

50

36778

Camshaft

(MCR)

 

 

298

28763

 

 

 

 

 

Screw,

10-32 x 35/64"

52

29914

Oil Pump

Ass'y.

 

 

300

36916

 

Fuel Tank (Incl. 292 & 301)

69

35261

* Mounting

Flange

Gasket

301

36246

 

 

Fuel Cap

 

 

 

 

70

34311D

Mounting

Flange

(Incl. 72 thru 83)

305

35647

 

Oil Fill Tube

 

 

72

36083

Oil Drain

Plug

 

 

 

306

36832

 

* "O"-Ring

 

 

 

 

75

27897

Oil Seal

 

 

 

 

 

307

35499

 

"O"-Ring

 

 

 

 

80

30574A

Governor

Shaft

 

 

 

309

650562

 

Screw,

10-32 x 1/2"

81

30590A

 

 

 

 

Washer

 

 

 

 

 

 

310

35648

 

Dipstick

 

 

 

 

82

30591

Governor

Gear Ass'yo(Incl.. 8!)

313

34080

 

 

 

 

 

 

Spacer

 

 

 

 

 

83

30588A

Governor

Spool

 

 

 

370A

36261

 

 

Decal

 

 

 

Lubrication

 

86

650488

Screw,

1/4-20 x '1-1/4"

370C

36861

Primer

Decal

 

 

89

6'I'I004

Flywheel

Key

 

 

 

370K

36695

Starter

Decal

 

 

90

611112

Flywheel

 

 

 

 

 

380

640026

 

Carburetor

 

(tncl.

t84)

92

650815

Bellevitle

Washer

 

 

390

590694

 

Rewind

Starter

 

93

650816

Flywheel

Nut

 

 

 

400

36792

 

Gasket

Set

 

 

 

100

34443A

Solid State

Ignition

 

 

 

 

(Incl. Items

Marked * in Notes)

10I

610118

Spark

Plug

Cover

 

 

4t6

36085

 

Spark Arrestor

Kit

103

651007

10-24 x 15/16"

 

Screw, Torx T-15,

 

 

 

(fnclo 417)(Optionaf)

110

34961

Ground

Wire

 

 

 

417

650760

 

 

 

Screw, 8-32 x 3/8" (Optional)

119

36787

 

 

 

* Cylinder

Head Gasket

900

 

 

Replacement

Engine NONE

120

36788

Cylinder

Head

 

 

 

900

 

 

 

 

 

 

 

Replacement

S/B 750796,

125

36779

Exhaust

Valve

(Std)

(IncL 15t)

 

 

 

 

 

 

order from 71-999

125

36780

Exhaust

Valve

 

 

 

 

 

 

RPM High 2900 to 3200

 

 

(1t32"

OS)(Incl,,

151)

 

 

 

126

36781

 

 

 

RPM Low 2450

to 2750

Intake Valve (Std.) (Incl. 151)

 

 

 

 

 

 

 

 

 

!26

36782

Intake

Valve (1/32" OS) (Incl. 15!)

(NOTE: This engine could have been built with 590737

130

6021A

Screw, 5/16-18 x 1-1/2"

starter.. Refer to the design of the rope pulley strength

135

35395

Resistor

Spark

Plug (RJ19LM)

ribs for part

identification Individual starter parts do not

150

35991

Valve

Spring

 

 

 

 

 

 

interchange

)

 

 

 

 

 

 

151

31673

Valve

Spring Cap

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

151A 40017

Intake

Valve Seal

 

 

Incl. Part #'s26756

(1),28833

(I),

36832 (1), 34338 (1),

169 36783

* Valve

Cover Gasket

 

 

35261 (t), 36783 (1), 36786 (1), 36787 (1)

172

36784

Valve

Cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

174

30200

Screw.

I0-24 x 9/16"

 

NOTE: All component dimensions given in U,S., inches

!78

29752

Nut & Lock Washer,

1/4-28

1 inch = 254

mm

 

 

 

 

 

 

182

6201

Screw,

1/4-28 x 7/8"

 

 

 

 

 

 

 

 

 

 

19

Image 19
Contents REV2 VBL ModelPreparation TrainingMaintenance Agreement Product SpecificationsCustomer Responsibilities TA LE of Contents Maintenance Lawn E AccessoriesTo Unfold Handle See Fig HOW to SET U P YOU R Lawn MowerTo Install Attachments To Remove Lawn Mower from CartonFIG, 3A To Assemble and Attach GrassCatcher See Figs a thru FIG, 3CKnow Your Lawn Mower Meets Cpsc Safety RequirementsEngine Zone Control HOW to USE Your Lawn MowerBefore Starting Engine Engine SpeedMowing Tips To Start EngineLubrication Lubrication ChartCusto ER Responsib L Tues Before Each USEGrass Catcher TiresBlade Care To Sharpen BladeMuffler CleaningLubrication AIR FilterCarburetor To Adjust Cutting HeightEngine Rear DeflectorFuel System StorageLawn Mower Handle See FigLLI === =N MODELNUMBER143.974506 MCR KEY Part NO. no DescriptionNO. no Description KEY Part DescriptionPart Description Problem Troubleshooting PointsCause Correction Owne S UAL For Repair SERVICE, Call this Toll Free NumberEngine Craftsman Model no Part Number Part Description