Craftsman 917.255917 Owner's Manual page 45

REPAIR PARTS
GT 18 TWIN GARDEN TRACTOR--MODEL NUMBER 917.255917
ENGINE BRIGGS & STRATTON--MODEL NUMBER 422437, TYPE NUMBER 1209-01
CYLINDER,CRANKSHAFT AND ENGINE BASE GROUP
KEY PART DESCRIPTION KEY PART DESCRIPTION
N O. NO, NO. NO.
01
02
03
04
05
06
07
08
09
10
;.1
11
11
13
14
15
16
17
18
19
19
19
19
2O
2O
2O
20
2!
22
23
23
24
25
26
27
28
29
3O
31
32
33
491685 Cylinder Assembly 34 212337
391086 Seal-Oil 35 491287
2 ! 2461 Head- Cylinder No. ! 36 296004
212462 Head-Cylinder No. 2 37 394348
271867 Gasket-Cylinder Head No. 1 38 89838
271868 Gasket-Cylinder Head No. 2 39 220863
393243 Breather Assembly No. 1 40 394539
393153 Breather Assembly No. 2
27803 Gasket-Valve Cover 41 90576
94382 Screw-Sem
270982 Gasket-Crankcase Cover
1/64" Thick 44 398924
271145 Gasket-Crankcase Cover 45 88838
.005" Thick 46 280220
271146 Gasket-Crankcase Cover 47 93783
.009" Thick 48 223055
93211 Screw-Cylinder Head 49 394391
(2-21/32" long) 50 270981
91084 Plug Oil Drain 51 222700
394430 Crankshaft - order part 94 !96 52 93053
Key for retaining timing gear 53 94298
394535 Cover Assembly - Crankcase 54 49!53t9
291675 Seal-Oi! 55 66538
93847 Screw-Crankcase cover Mtg Sere 56 93448
394955 Piston Assembly.Standard Inc. Key No. 's 57 222698
20 & 22) 58 220863
394956 Piston Assembly - 010" O.S. 59 222773
394957 Piston Assembly - .020" O.S. 60 231445
394958 Piston Assembly - .030" O.S, 61 393606
394959 Ring Set - Piston - Standard 82 393741
394960 Ring Set - Piston - .010" O.S. 83 261961
394961 Ring Set - Piston - .020" O.S.
394962 Ring Set - Piston - 030" O.S.
398990 Dipstick and Tube Assembly (Inc. 64 210949
Key No's. 44, 45 & 46) 65 261463
260924 Lock-Piston Pin 88 262332
299691 Pin Assembly - Piston 87 398808
Standard (Inc. Key No, 22) 68 230318
391286 Pin - Assembly-Prston-,O05" O.S. 69 92791
394306 Rod Assembly-Connecting 70 93722
For Connecting Rod with .020" 71 261528
Crankpin bore order No 397158 72 92268
223053 Dipper.Connecting Rod 73 491523
92909 Screw-Connecting Rod 74 262331
390420 Valve-Exhaust 75 93886
65906 Spring-Intake Valve 76 271170
26828 Spring-Exhaust Valve 77 271174
221596 Retainer.Intake Valve 78 223882
292260 RotocoikExhaust
93630 Retainer-Exhaust Valve Rote- Cap
26 ! 368 Tappet- Valve
Gear-Cam
Foam Seal - Governer Shaft
Ptpe- Fue! 23" cut to length
Gear - Governor
Wrench-Spark Plug
Washer-Coy. Crank (inside)
Plug.Spark (Resistor) 2-3/8
high-6Omm)
Nut-Hex 8 32
Cap and Dipstick-Oil Filter
Sea!-Filler Tube
Tube - Oi! Fzlter
Screw-Hex Hd.
Trough-Dipper
Base-Engine
Gasket-Engine Base
Guide Air
Clamp-Fuel Pipe
Retainer-E.Ring
Crank-Governor
Elbow*Spark Plug
Plug-Hex Socket
Key-Flywheel
Washer
Washer- Thrust
Gear-T_ming
Sea! Ass'y. and Retainer
Beanng-Ball (P T O. side)
Guide-Exhaust Valve
NOTE: 231218 Intake Valve Guide
Only (Brass)
Seat-Exhaust Valve (Standard)
Seat-intake Valve (Standard)
Lower Bushing - Gov
Wire-Ground
Connector-Fuel Pipe
Washer.Lock Shakeproof
Terminal-Spade
Valve-Intake
Washer
Bearing-Cyfinder
Upper Bushing-Governor
Screw
Sea! Tube
Gasket - Exhaust
Washer - Coy Shaft
"INCLUDED IN GASKET SET 394501
+ SPECIAL TOOLS REQUIRED TO INSTALL
45