CRAFTSMAN
4-CYCLE
ENGINE
MODEL:143.991004
Ref.
No.
1
2
14
15
16
17
18
19
20
25
26
28
30
31
35
36
37
38
4O
4O
4O
41
41
41
42
42
42
43
45
47
48
5O
51
52
6O
62
63
65
66
68
69
7O
72
75
8O
81
82
83
84
86
88
89
9O
92
93
100
101
102
Part
No.
35421
27652
28277
35082
36494
29916
651028
36495
35319
35424
650561
30322
35429A
35327
29826
29918
29216
29642
35776A
35777A
35778A
"35773A
, 35774A
35775A
35779
35780
35781
35772
36895
651033
34034
35381
35315A
31356
33273A
650760
28545
650128
650990
33356
*35317
35711A
31927
35319
35783
30590A
35378
30588A
29193
650833
31707A
32589
611093
650880
650881
35135
610118
651024
Part Name
Cylinder (Incl. 2 & 20)
Dowel Pin
Washer
Governor Rod
Governor Lever
Governor Lever Clamp
Screw, Torx %16, 8-32 x 3/8"
Extension Spring
-_
Oil Seal
Blower Housing Baffle
Screw, 1/4-20 x 5/8"
Lock Nut, 8-32
Crankshaft
Counterblance Gear
Screw, 10-32 x 3/4"
Lock Washer
Lock Nut, 10-32
Retaining Ring
Piston, Pin & Ring Set (Std.)
Piston, Pin & Ring Set (.010" OS)
Piston, Pin & Ring Set (.020" OS)
Piston & Pin Ass'y. (Std.) (Incl. 43)
Piston & Pin Ass'y. (.010" OS) (Incl.
43)
Piston & Pin Ass'y. (.020' OS) (Incl.
43)
Ring Set (Std.)
Ring Set (.010" OS)
Ring Set (.020" OS)
Piston Pin Retaining Ring
Connecting Rod Ass'y. (incl. 47)
Connecting Rod Bolt
Valve Lifter
Camshaft (MCR)
Counterbalance Weight
Oil Pump Ass'y.
Blower Housing Extension
Screw, 8-32 x 3/8"
Grommet
Screw, 10-24 x 1/2"
Screw, TorxT-30, 1/4-20 X 15/32"
Greund Terminal
Mounting Flange Gasket
Mounting Flange (Incl. 72, 75 & 80)
Oil Drain Plug
Oil Seal
Governor Shaft
Washer
Governor Gear Ass'y. (Incl. 81)
Governor Spool
Retaining Ring
Screw, 1/4-20 x 1-3/16"
Spacer (Incl. 8!)
Flywheel Key
Flywheel
Lock Washer
Flywheel Nut
Solid State Ignition
Spark Plug Cover
Solid State Mounting Stud
Ref.
Pad
No.
No.
103
651007
110
35234
119
*36451
120
36449
123
33261
124
651031
125
27878A
125
27880A
126
34035
126
34036
127
650691
128
650690
130
650694A
135
33636
149
27882
149A
35862
150
27881
151
32581
169
"27896A
170
28423
171
28424
172
28425
"
173
35350
174
650128
178
29752
182
30088A
184
*33263
185
34926
186
33860
200
35956
203
36482
204
650777
207
35989
209
650902
210
27793
211 ',
28942
223
650378
224
"27915A
234
650825
238
650834
239
"33629
240
35538B
245
35403
245A
35404
250
35961
251
650886
260
36266
261
650788
Pad Name
Screw, Torx T-15, 10-24 x 15/16"
Ground Wire
Cylinder Head Gasket
Cylinder Head
Intake Pipe Brace
Screw, 1/4-20 x 9/16"
Exhaust Valve (Std.) (Incl. 151)
Exhaust Valve (1/32" OS) (Incl. 151)
Intake Valve (Std.) (Incl. 151)
Intake Valve (1/32" OS) (Incl. 151)
Washer
BelleviUe Washer
Screw, 5/16-18 x 2"
Resistor Spark Plug (RJ17LM)
Valve Spring Cap
Valve Spdng Cap
Valve Spring
Valve Spdng Keeper
Valve Cover Gasket
Breather Body
Breather Element
Valve Cover
Breather Tube
Screw, 10-24 x 1/3"
Nut & Lock Washer, 1/4-28
Screw, 1/4-28 x 1°
Carburetor To Intake Pipe Gasket
Intake Pipe
Governor Link
Control Bracket (Incl. 203 & 204)
Compression Spring
Screw, 6-32 x 21/32"
Choke Link
Screw, 10-32 x 7/16"
Conduit Clip
Screw, 10-32 x 318"
Screw, Torx %30, 5/16-18 x 1-1/8"
Intake Pipe Gasket
Nut & Lock Washer, 1/4-20
Screw, 10-32 x 1-17/32"
Air Cleaner Gasket
Air Cleaner Body (Incl. 239)
Air Cleaner Filter (Incl. 234)
Air Cleaner Filter
Air Cleaner Cover
Wing Nut, 1/4-20
Blower Housing
Screw, 5/16-18 x 3/4"
262
263
264
264A
265
29747B
35963
650990
650802
33272B
Screw, Torx T-40, 5/16-24 x 21/32"
Trim Ring
Screw, 5/16-18 x 15/32"
Screw, 1/4-20 x 5/8"
Cylinder Head Cover
*Indicates Parts Included in
Gasket Set, Ref. No. 400.
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