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16 TRACTOR--MODEL NUMBER 917.25740
CRAFTSMAN 4-CYCLE ENGINE
KEY
PART
NO.
NO.
1
630012
2
33707
2A
28483
3
31928
4
27652
5
33497
6
29783
7
31931
8
31932
9
33498
10
33499
11
32238
11
32239
11
32240
11
32621
11
32622
12
31919
13
32241
13
32242
13
32243
13
32625
13
32626
14
33093A
15
32077
16
26073
17
28264
18
33470
19
33472
20
33471
21
33505
21
33645
22
33506
22
33646
23
33507
24
33508
25
33509
26
33510
27
33473
28
650745
29
30590A
30
31948
31
*31956
32
33779
33
31950
34
30564
35
-
~
36
3
38
DESCRIPTION
Complete Engine
Cylinder ABsy. (Incl. Nos. 2A,
4
&
33)
Plug,
Oil drain
Cup, Bearing
Pin, Dowel
Crankshaft ABsy. (Incl. Nos. 3
& 6 thru
10)
Pin, Crankshaft gear
Gear, Crankshaft
Bearing,
Tapered
roller
Gear, Counterbalance weight
Spacer
Piston
&
Pin Assy. (Incl. 2 of
No.
12) (Standard)
Piston &
Pin Assy. (Incl.
2
of
No
.
12) (.010 oversize)
Piston &
Pin Assy. (Incl. 2 of
No.
12)
(.020
oversize)
Piston
&
Pin
Assy.
(Incl. 2 of
No.
12) (.030 oversize)
Piston
&
Pin Assy. (Incl. 2 of
No.
12) (.040 oversize)
Ring, Piston pin retaining
Ring
Set, Piston (Standard)
Ring
Set, Piston (.010 oversize)
Ring
Set, Piston (.020 oversize)
Ring
Set, Piston (.030 oversize)
Ring
Set, Piston
(.040 oversize)
Rod
ABsy.,
Connecting (Incl.
Nos. 15,16 & 17)
Bolt, Connecting rod
Washer,
Connecting rod
Nut, Lock
Camshaft (Mech. Compression
Release)
Lifter,
Valve
Rod, Push.
Valve,
Intake
(Standard)
Valve, Intake (1/32" oversize)
Valve, Exhaust (Standard)
Valve, Exhaust (1/32" over-
size)
Spring, Valve
Retainer
&
Cap Set, Keeper
valve
"0"
Ring
Cap, Valve
Gear
&
Shaft
Assy.,
Governor
Washer, Flat
Washer, Flat
Spool, Governor
Gasket, Cylinder cover
Cover Assy., Cylinder (Incl.
Nos. 33, 134 & 141)
Seal, Oil
Screw, Hex hd.
cap
Sems,
1/4-20 x
1
Screw, Hex
hd.
Sems,
1/4-20
x
2-1
/4
Rod
ABsy., Governor
Spacer,
Governor
rod
Ring,
Retaining
MODEL NUMBER: 143.630012
KEY
PART
NO.
NO.
39
33469
40
29985
41
*
33474
42
33465
45
33657
46
650690
47
650691
48
650692
49
650746
50
*33515
51
33475
52
650749
53
650512
54
*33476
55
33477
56
650750
57
33478
58
31963
59
31964
60
650518
61
30312
62
650428
63
7975
64
31965
65
31984A
66
28558
67
31966
68
650597
69
31967
70
650591
71
33099
72
*32599
73
650666
74
32579
75
650561
76
650592
77
610854
78
650594
79
610855
80
650661
81
33479
82
30688
83
650751
84
33775
85
8274
86
650595
- 30
-
DESCRIPTION
Dipstick,
Oil fill (Incl. No. 40)
"0"
Ring
Gasket, Cylinder
head
Head, Cylinder
Plug, Spark (Champion L-7 or
equivalent)
Washer, Belleville
Washer, Flat
Screw, Hex hd. cap,
5/16-18
x
1-3/4
Screw, Hex hd. cap,
5/16-18
x
1-3/8
Gasket, Intake pipe
Pipe, Intake
Stud, Carburetor
Screw, Hex
hd
.
cap Sems,
5/16-18 x
7/8
Gasket, Carburetor
Baffle,
Air
extension
Nut
& Washer, 5/16-24
Link,
Governor
Lever, Governor
Clamp,
Governor
lever
Lockwasher, No.
E. T
..
Screw,
Hex slotted washer
hd.,
10-32
x 1/2
Screw,
Phil.
fil. hd. mach.,
10-24
x 7/8
Nut, Square,
10-24
Plate, Governor spring
Lever, Control
Washer, Wave
Bushing, Lever
Screw,
Hex
washer hd. mach.,
10-24
x
5/8
Spring, Governor
Screw, Fil. Slotted
hd.
mach.,
10-24
x
2
Spring, Locking
"0" Ring
Washer,
Lock
Baffle, Blower
housing
Screw,
Phil.
hex hd. Sems,
1/4-20
x 5/8
Key, Flywheel
Flywheel
Nut, Flywheel
Magneto,
Solid state (Incl.
Nos.
158 thru 162)
Screw;
Phil.
pan hd. Sems,
1/4-20
x
3/4
Extension, Blower
housing
Screw, Hex
hd. cap, 1/4-20
x
1/2
Screw, Phil. hex
hd.
w/conical-
washer, 1/4-20 x 7/16
Housing, Blower
Lockwasher, Split, 5/16
Screw,
Hex
hd. cap, 5/16-24 x
3/8
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