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CRAFTSMAN
4-CYCLE
ENGINE
MODEL NUMBER 143.975506
KEY
PART
NO.
NO.
DESCRIP_ON
1
36478A
2
26727
6
33734
7
36557
12A
36558
12B
34695
14
28277
15
30589
16
32651
17
31335
18
651018
19
36281
20
32600
30
35996
40
36073
40
36074
40
36075
41
36070
41
36071
41
36O72
42
36O76
42
36O77
42
36O78
43
20381
45
30963B
46
32610A
48
27241
50
35992
52
29914
69
35261
70
34311D
72
36083
75
27897
80
30574A
81
30590A
82
30591
83
30588A
86
650488
89
611004
90
611112
92
650815
93
650816
10034443A
101610118
103651007
11034961
11936477
12036476
12536471
12536472
12629314B
12629315C
1306021A
13535395
15035991
15131673
16927234A
17232755
17430200
17829752
1826201
18426756
18536544
18634337
KEY
NO.
PART
NO.
Cylinder (Incl. 2,7,20 & 125)
189650839
Dowel Pin
19136589
Breather Element
195610973
Breather Ass_/. (Incl.6 & 12A)
20035727
Breather Cover & Tube (Incl. 12B)
Breather Tube Elbow
20236482
Washer
20331342
Govemor Rod (Incl. 14)
204650549
Govemor Lever
205650777
Govemor Lever Clamp
20734336
Screw, Torx1"-15,8-32 x 19/64"
20930200
ExtensionSpring
21532410
Oil Seal
223650451
Crankshaft
22434690A
Piston,Pin & Ring Set (Std.)
238650932
Piston,Pin & Ring Set (.010" OS)
23934338
Piston,Pin & Ring Set (.020=OS)
24135797
Piston& Pin Ass'y.(Std.) (Incl. 43) 24535066
Piston & Pin Ass'y.
25035065
(.010" OS) (Incl. 43)
26036915
Piston& Pin Ass'y.
26130200
(.020" OS) (Incl. 43)
262650831
Ring Set (Std.)
27536473
Ring Set (.010" OS)
277650988
Ring S_t (.020" OS)
28535000A
Piston Pin RetainingRing
287650926
Connecting RodAss'y. (Incl. 46)
29029774
ConnectingRod Bolt
29226460
Valve Lifter
29828763
Camshaft (MCR)
30036916
Oil PumpAss'y.
30136246
Mounting Flange Gasket
30535647
Mounting Flange (Incl. 72 thru 83)
30636832
Oil Drain Plug
30735499
Oil Seal
309650562
Governor Shaft
31035648
Washer
31334080
Governor Gear Ass'y. (Incl. 81)
370A
36261
Governor Spool
370B
35167
Screw, 1/4-20 x 1-1/4"
370C
36861
Flywheel Key
370K
36695
Flywheel
380632747
BellevilleWasher
390590694
Flywheel Nut
40036481
Solid State Ignition
Spark PlugCover
41636085
Screw, TorxT-15, 10-24 x 15/16"
Ground Wire
417650760
* Cylinder Head Gasket
Cylinder Head
ExhaustValve (Std,) (Incl. 151)
ExhaustValve
(1/32" OS) (IncL 151)
Intake Valve (S_I.) (Incl. 151)
Intake Valve (1/32" OS) (tncl.151)
Screw, 5/16-18 x 1-1/2"
ResistorSpark Plug (RJ19LM)
Valve Spring
Valve Spring Cap
• Valve Cover Gasket
Valve Cover
Screw, 10-24 x 9/16"
Nut & LockWasher, 1/4-28
Screw, 1/4-28 x 7/8"
• CarburetorTo Intake Pipe Gasket
Intake Pipe
Governor Link
DESCRIPTION
Screw, 114-20x 3/8"
S.E. Brake Bracket(Incl. 195)
Terminal
Control Bracket(Incl. 202 thru
206)
Compression Spring
Compression Spring
Screw, 5-40 x 7/16"
Screw, 6-32 x 21/32"
ThrottleLink
Screw, 10-24 x 9/16"
Control Knob
Screw, 1/4-20 x 1"
• Intake Pipe Gasket
Screw, 10-32 x 49/64"
* Air CleanerGasket
Air CleanerCollar
Air Cleaner Filter
Air CleanerCover
BlowerHousing
Screw, 10-24 x g/16"
Screw, 114-20x 1/2"
Muffler(Incl.277)
Screw, 1/4-20 x 2-5/16"
StarterCup
Screw, 8-32 x 21/64"
Fuel Line
Fuel LineClamp
Screw, 10-32 x 35/64"
FuelTank (Incl.292 & 301)
Fuel Cap
Oil FillTube
* "O"-Ring
=O-Ring
Screw, 10-32 x 1/2"
Dipstick
Spacer
LubricationDecal
Control Decal
Pdmer Decal
Starter Decal
Carburetor(Incl. 184)
RewindStarter
Gasket Set
(Incl. Items Marked * in Notes)
Spark ArrestorKit
(Incl. 417)(Optional)
Screw, 8-32 x 3/8" (Optional)
gOO--- Reple,;ementEngine750798,
orderfrom71-999
90G--
Rel_lacementS/B 75067gA,
orderfrom 71-999,
RPM High2900 to 3200
RPM Low 2450 to 2750
(NOTE: This engine couldhave been builtwith 590737
starter. Refer to the designof the ropepulley strength
ribsfor part identification. I ndividualstarter partsdo not
interchange.)Incl. Part #'s 26756 (1),27234A (1), 33735
(1), 36832 (t) 34338 (1), 34690A (t), 35261 (1),
36477 (1)
NOTE: Allcomponentdimensionsgiven in U.S. inches
1 inch= 25.4 mm
37
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