..
..
REPA
IR
PARTS
SEARS
GTV
16 TWIN
--
MODEL NUMBER 917.253721
ENGINE
--
MODEL NUMBER 402417, TYPE NUMBER 0660-01
CYLINDER,
CRANKSHAFT
AND
ENGINE BASE GROUP
KEY PART
DESCRIPTION
KEY
PART
DESCRIPTION
NO. NO.
NO. NO.
1 394900 Cylinder
Asse
mb
ly
35 271316
Foam
Seal
· Governor Shaft
2
391086
Seal· Oil
36
393244
Pipe· Fuel
3 212461
Head·
Cylinder No. 1
37 394348
Gear
· Governor
4 212462
Head
· Cylinder No. 2
38
89838
Spark
Plug
Wrench
5
270984
*Gasket
·Cylinder
Head
No. 1
39 220863
Washer
· Gov. Crank (inside)
6
270983 *Gasket · Cylinder
Head
No.2
40
394539 Plug · Spark
(Res
istor)
(2
· 3/8
High-
7 393243
Breather
Assembly No. 1
60M.M
.)
8 393153 Breather
Assembly No. 2
41
90576
Nut
·
Hex
8 ·
32
9 27803 *Gasket· Valve Cover
42
231174
Terminal
10
93394 Screw-
Sem
43
280180
Grommet · Insulator
11
270982 • Gasket · Crankcase Cover 1
/64"
Thick
44 394014
Cap
and
Dipst
ick·
Oil Filler
11
271145 *Gasket·
Crankcase
Cover .0
05"
Thick
45
68838
Seal· Filler Tube
11
271146
*Gasket· Crankcase Cover .
009"
Thick
46
392782
Tube·
Oil Filler
12
93113
Screw· Cylinder Head (2 ·
15
/
16"
long)
47
93783 Screw ·
Hex
Hd.
13
93111
Screw· Cylinder Head
(1
·
15
/
16"
long)
48
92268
Wash
er
14
91084
Plu
g·
Oil
Drain
49
394391
Base
· Engine
15 392976
Crankshaft
50 270981
*Gasket · Engine
Base
16
394420
Cover Assembly· Crankcase
51
222700
Baffle·
Air
17
291675 Seal·
Oil
52
93053
Clamp·
Fuel
Pipe
18
93847 Screw · Crankcase Cover Mtg.
Sem
53 93851 Retainer - E-Ri
ng
19
394955 Piston Assembly · Standard
54 394396
Crank · Governor
19
394956 Piston Assembly·
.010"
O.S.
55 66538 Elbow · Spark
Plug
19
39
4957
Piston
Assembly·
.020"
O.S.
56 91540 Key ·
Pul
ley
19 394958 Piston Assembly·
.030"
O.S.
57
61760
Key · Flywheel
20
394959
Ring
Set
· Piston · Standard
58
220863
Washer
20
394960
Ring
Set·
Piston ·
.010"
O.S.
59
222773
Washer
- Thrust
20
394961
Ring
Set·
Piston · .
020"
O.S.
60 261363
Gear
· Timing
20
394962
Ring
Set ·
Pi
ston·
.0
30"
O.S.
61
393606
Seal
Ass'y. and Retainer
21
394023
D
ip
sti
ck
and
Tu
be
Assembly
63 230655
+Guide
· Exhaust Valve
64
210940
+Seat·
Exhaust Valve (Standard)
22
260924
lock
· Piston Pin
65 261463
+Seat· Intake Valve (Standard)
23
299691
Pin
Assembly· Piston· Standard
66
261559
lower
Bushing - Gov.
23 391286
Pin
Assembly · Piston·
.005"
O.S.
67
391115
Wire
· Ground
24
39
4306
Rod
Assembly · Connecting
68
230318
Connector· Fuel
Pipe
25
222480
Dipper·
Connecting
Ro
d
69
92791
Washer·
lock
Shakeproof
26
92909
Screw·
Connecting Rod
70
93722
Te
rminal ·Spa
de
27 390420
Valve ·
Exhaust
71
261528 Valve · Intake
28
65906 Spring · Intake
Va
lve
Us
es: 393606
Seal
Ass'y.
and
Retainer
29 26828
Spr
i
ng·
Exh
au
st
Va
l
ve
(Key N
o.
61).
30
221596 Retainer · Intake Valve
72
261623
+ Bearing
· Cyclinder
31
292260 Rotocoil · Exhaust
*Inc. in Gasket Set · 394501
32
93630 Retainer· Exhaust Valve Rotocoil
+Special Tools
required
to
install ·See Repair
33
26
13
68
Tappet -
Valve
Instructions Manual.
34 212415 Gear·
Cam
.
29.
another free manual from www.searstractormanuals.com
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