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repair parts
ST /16
TRACTOR--MODEL NUMBER 917.25741
CRAFTSMAN 4-CYCLE ENGINE
KEY
NO.
1
2
3
4
5
6
7
8
9
10
11
11
11
11
11
12
13
13
13
13
13
14
15
16
17
18
19
20
21
21
22
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
PART
NO.
640012
33707
31928
27652
33497
29783
31931
31932
33498
33499
32238
32239
32240
32621
32622
31919
32241
32242
32243
32625
32626
33093A
32077
26073
28264
33470
33472
33471
33505
33645
33506
33646
33507
33508
33509
33510
33473
650745
30590A
31948
*31956
33779
31950
30564
650492
32425
32426
29193
4979R-25.6.73
DESCRIPTI
ON
Complete Engine
Cylinder
Assy.
(Incl. Nos. 2A,
4
&
33)
Cup,
Bearing
Pin
,
Dowel
Crankshaft Assy.
(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
Assy
., 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,
l/4-20
X
1
Screw,
Hex hd. Sems,
1/4-20
x
2-1/4
Rod Assy.,
Governor
Spacer,
Governor
rod
Ring,
Retaining
-
30
-
KEY
NO.
39
40
41
42
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
.
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
MODEL NUMBER: 143.640012
PART
NO.
33469
29985
*33474
33465
33657
650690
650691
650692
650746
*33515
33475
650749
650512
*33476
33477
650750
33478
31963
31964
650518
30312
650428
7975
31965
31984A
28558
31966
650597
31967
650591
33099
*32599
650666
32579
650561
650592
610854
650594
610855
650661
33479
30688
650751
33775
8274
650595
DESCR
IPTION
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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