_RAFTSMAN

4-CYCLE

 

ENGINE

 

 

 

 

MODEL NUMBER 143.986718

KEY

PART

 

 

 

 

 

KEY

PART

 

 

 

 

 

NO.

NO.

DESCRIPTION

 

 

NO.

NO.

DESCRIPTIOI_':

_

 

1

36835A

Cylinder (Incl. 2 & 20)

 

155

35624A

Rocker Arm

 

 

 

 

2

26727

Dowel Pin

 

 

 

 

157

650914

Lock Nut

 

 

 

 

6

33734

Breather Element

 

158

36629

Push Rod

 

 

 

 

7

36557

Breather Ass'y. (Incl. 6 & 12A)

159

35626

Rocker Arm Cover

Gasket

12

32447

Breather Tube

 

 

160

35627

Rocker Arm Housing

 

12A

36558

Breather Cover

& Tube

 

161

30063

Screw, Torx T-30,

1/4-20

x 1/2"

 

 

(Incl.12B)

 

 

 

 

178

29752

Nut & Lock Washer, 114-28

12B

36694

Breather Tube Elbow

 

182

30088A

Screw, 1/4-28 x 1"

 

14

28277

Washer

 

 

 

 

184

26756

Carburetor Gasket

 

15

30589

Governor Rod (Incl. 14)

 

185

36579

Intake Pipe

 

 

 

 

16

34839A

Governor

Lever

 

 

186

32653

Governor Link

 

 

 

17

31335

Governor Lever Clamp

 

187

36580

Spacer

 

 

 

 

18

651018

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

189

650831

Screw, 1/4-20 x 1/2"

 

19

36281

Extension Spdng

 

191

36559

S.E, Brake Ass'y.(Incl. 195)

2O

32600

Oil Seal

 

 

 

 

195

 

610973

Terminal

 

 

 

 

30

35801

Crankshaft

 

 

 

196

 

35035

Power Restart Switch

....

40

35544A

Piston, Pin &'RingSet (Std.)

207

 

34336

Thlottie Unk

 

 

 

 

 

35545A

Piston, Pin & Ring Set (.010"OS)

216

 

33086

R.P.M. Adjusting Lever

 

 

35546

Piston, Pin & Ring Set (.020"OS)

223

 

651044

Screw, 1/4-20

x 2-25/32"

 

41

35541

Piston & Pin Ass'y.(Std.)

 

223A

 

651043

Screw, 1/4-20 x 1-31/64"

 

 

35542

Piston & Pin Ass'y.(.010" OS)

224

 

36581

Intake Pipe Gasket

 

 

 

(Incl. 43)

 

 

 

 

238

 

650932

Screw, 10-32

x 49/64"

 

 

35543

Piston & Pin Ass'y.(.020"

OS)

239

 

34338

Air Cleaner Gasket

 

 

 

(Incl. 43)

 

 

 

 

241

 

36919

Air Cleaner

Collar

 

42

35547A

Ring Set (Std.)

 

 

245

 

36905

Air Cleaner

Filter

 

 

 

35548A

Ring Set (.010"

OS)

 

250

 

36920

Air Cleaner

Cover

 

 

35549

Ring Set (.020"

OS)

 

260

 

37180

Blower Housing

 

 

43

20381

Piston Pin Retaining Ring

261

 

30063

Screw, Torx T-30,

1/4-20

x 1/2"

45

32875A

Connecting

Rod Ass'y.(Incl. 46)

262

 

650831

Screw, 1/4-20 x 1/2"

 

46

32610A

Connecting

Rod Bolt

 

263A

 

37184

Starter Grill

 

 

 

 

48

35616

Valve Lifter

 

 

275

 

36950

Muffler (Incl. 276

& 277)

 

50

37011

Camshaft

(MCR)

 

276

 

36949

Locking Plate

 

 

 

52

29914

Oil Pump Ass'y.

 

277

 

651039

Screw, 1/4-20 x 2-47/64"

 

69

35261

Mounting Flange Gasket

 

285

 

35000A

Starter Cup

 

 

 

 

70

36995

Mounting Flange

 

287

 

650926

Screw, 8-32

x 21/64"

 

 

 

(Incl. 72 thru 83)

 

290

 

29774

Fuel Line

 

 

 

 

72

30572

 

 

Fuel Une Clamp

 

 

Oil Drain

Plug (Incl. 73)

 

292

 

26460

 

 

73

28833

Drain Plug

Gasket

 

298

 

28763

Screw, 10-32 x 35/64"

 

75

27897

Oil Seal

 

 

 

 

300

 

36916

Fuel Tank (Incl. 292 & 301)

80

30574A

Governor

Shaft

 

 

301

 

36246

Fuel Cap

 

 

 

 

81

30590A

Washer

 

 

 

 

305

 

35647

Oil Fill Tube

 

 

 

 

82

30591

Governor Gear

Ass'y.(Incl. 81)

306

 

36996

_O'-Ring

 

 

 

 

83

30588A

Governor

Spool

 

 

307

 

35499

"O"-Ring

 

 

 

 

86

650488

Screw, 1/4-20 x 1-1/4"

 

309

 

650562

Screw, 10-32

x 1/2"

 

89

611004

Flywheel

Key

 

 

310

 

35648

Dipstick

 

 

 

 

90

611044

Flywheel

 

 

 

 

313

 

34080

Spacer ....

 

 

 

 

92

650815

Belleville

Washer

 

314

 

650767

Screw, 8-32

x 27/64"

 

93

650816

Flywheel

Nut

 

 

315

 

36952

Alternator Coil

 

 

100

34443B

Solid State Ignition

 

322

 

35013

Connector Body

 

 

101

610118

Spark Plug Cover

 

322A

610885

Connector Body

 

 

103

651007

Screw, Ton(T-15,10-24

x 15/16"

325

 

35249

Spring Clip

 

 

 

 

110

37047

Ground Wire

 

 

325A

37152

Spring Clip

 

 

 

 

110A 36953

Ground Wire

 

 

325B

29443

Spring Clip

 

 

 

 

110B 36954

D.C. Starter Wire

 

341A

36578

Blower Housing Support Bracket

119

36738

Cylinder Head

Gasket

 

347

 

651038

Screw, 10-32 x 27132"

 

120

36721

Cylinder Head

 

 

370A

36261

Lubrication Decal

 

125

36471

Exhaust Valve (Std.) (Incl. 151)

370C

37199

Pdmer Decal

 

 

 

 

36472

Exhaust

Valve (1/32" OS)

380

 

640160

Carburetor (IncL 184)

 

 

 

(Incl. 151)

 

 

 

390

 

590739

Rewind Starter

 

 

126

29314B

Intake Valve (Std.) (Incl. 151)

395

 

35709

Electric Starter Motor (12 Volt)

 

29315C

Intake Valve (1/32" OS)

 

400

 

36806B

Gasket Set (Incl. Items Marked *)

 

 

(Incl. 151)

 

 

 

900

 

 

Replacement

Engine NONE

130

650912

Screw, 5/16-18

x 1-1/2"

 

900

 

 

Replacement

S/B 750834, order

130A650999

Screw, 5/16-18

x 2-41/64"

from 71-999

 

 

 

 

 

135

34645

Resistor Spark Plug (RN4C)

 

 

 

RPM High 3000 to 3300

 

150

31672

Valve Spdng

 

 

NOTE: This engine could have been_uilt

151

31673

Valve Spring Cap

 

with 590702

starter.

 

 

 

 

153

36649

Push Rod Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

154

650913

Rocker Arm Stud

 

 

 

 

 

 

 

 

 

41

Page 41
Image 41
Craftsman 917.377631 owner manual Raftsman Cycle Engine, Model Number

37763, 917.377631 specifications

The Craftsman 917.377631 and 917.37763 models are part of the renowned Craftsman line of garden tractors that are designed for residential lawn care and landscaping tasks. These models are well-regarded for their durability, ease of use, and efficient performance, making them a popular choice among homeowners and gardening enthusiasts.

One of the standout features of the Craftsman 917.377631 and 917.37763 is their robust engine. Both models are typically equipped with a powerful Briggs & Stratton engine that offers ample horsepower for mowing, trimming, and hauling tasks. The engine is designed for reliability, providing smooth operation and a longer service life. Coupled with an automatic transmission, these tractors offer a seamless driving experience, allowing operators to easily control their speed and movement across various terrains.

Another noteworthy characteristic is the cutting deck. The Craftsman 917.377631 and 917.37763 come with a wide cutting deck, usually around 42 inches, which enables efficient mowing capabilities. This feature reduces the time spent mowing the lawn while ensuring a clean and even cut. Additionally, the adjustable cutting height allows users to choose the preferred grass length, catering to different lawn types and seasonal requirements.

The Comfort Features included in these models enhance the user experience. They often feature ergonomic seating and a user-friendly dashboard that provides easy access to controls and indicators. The steering wheel is designed for comfortable maneuvering, making it easy to navigate around obstacles in the yard.

The incorporation of technologies such as electric start enhances convenience. Instead of the traditional pull-start mechanism, users can start the engine with the push of a button, adding ease of use to the operator's experience. Furthermore, these tractors may come equipped with additional features like a bagger or mulch kit, enabling users to manage grass clippings efficiently.

Ultimately, the Craftsman 917.377631 and 917.37763 models exemplify a blend of power, comfort, and technology, proving to be valuable assets for any homeowner looking to maintain their lawn easily and effectively. With their reliable engines, wide cutting decks, user-centric designs, and added convenience features, these garden tractors are prepared to tackle the demands of residential landscaping tasks.