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REPAIR PARTS
!8 HP 42" TRACTOR
o o MODEL NUMBER
917,257560
BRJGGS & STRATTON
ENGINE
o MODEL
NUMBER
422707,
TYPE NUMBER
1522o01
L
KEY PART
KEY PART
NO= NO.
DESCRIPTION
NO, NO.
DESCRIPT|ON
1
494533
2
399265
3
391086
5-1
493457
5-2
493458
7-1
271867
7-2
271868
8=1 398065
8-2
222892
9
27803
10
94382
11
280225
12
271703
271188
271189
13
94565
15
94239
15A 94497
!6
394028
94196
18
493304
20
291675
21
399195
22
94724
23
491180
24
222698
25
394955
394956
394957
394958
26
394959
394960
394961
394962
27
260924
28
299691
391286
29
394308
397158
32
33
34
35
36
40
4!
42
94671
390420
261528
65906
26828
221596
292260
93630
CylinderAssembiy
45
26!368
Bearing, Cylinder
46
213520
Seal, Oil
50
213290
Head, Cylinder Number 1
5!
271412
Head, Cylinder Number 2
51A 280319
* Gasket, Cylinder Head Number I
52
270884
* Gasket, Cytinder Head Number 2
53
93970
Breather Assembty Number t
54
93208
Cover, Breather, Cylinder Number 2
75
222511
(Use with Key Number 572, Air
78
94326
Baffle with Mounting Holes)
81
223016
* Gasket
Valve Cover
90
495181
Screw, Sems
91
495035
Tube, Breather
93
231209
* Gasket, Crankcase Cover 1/64"
94
491538
* Gasket, Crankcase Cover .005"
95
93499
* Gasket, Crankcase Cover .009"
Screw, Cylinder Head
96
221939
Plug, OH Drain
97
392672
Plug, Pipe
98
91920
Crankshaft
99
26157
Key, Timing Gear
102 271607
Base Assembly, Crankcase
103 298514
Seat, Oil
104 230896
Seat Assembly, Cylinder Plug
105
394683
Screw, Sems, Crankcase Cover
107 491543
Mounting
108 223534
Flywheel and Ring Gear Assembly,
109 392673
Magneto
116 280474
Key, Flywheel
117 231338
Piston Assembly, Standard
119 94152
Piston Assembly
.010" Oversize
120 92290
Piston Assembly
°020" Oversize
121 491539
Pision Assembly
.030" Oversize
127 223472
Ring Set, Piston, Standard
161 398826
Ring Set, Piston .010" Oversize
165 94289
Ring Set, Piston .020" Oversize
187 299146
Ring Set, Piston .030" Oversize
188 93535
Lock, Piston Pin
201
262683
Pin Assembly, Piston, Standard
202
262684
Pin Assy, Piston .005" Oversize
203
280997
Rod Assembly, Connecting
203A
490207
Rod Assembly, Connecting,
205
93971
°020" Undersize Crankpin Bore
206
94298
Screw, Connecting Rod
207
262337
Valve, Exhaust
209
262352
Valve, Intake
209A
261563
Uses: 393606 Seal Assembly and
Retainer (Key Number 868)
Spring _ntake Vaive
Spring, Exhaust VaJve
Retainer, Intake Valve
Rotocoil, Exhaust Valve
Retainer, Exhaust Valve Rotocoil(2)
Tappet, Valve
Gear, Cam
Manifold, Intake
*** Gasket, Carburetor & intake Elbow
Spacer, Carburetor
* Gasket, Intake Manifold Mounting
Screw, Sems, Carburetor Mounting
Screw, Sems, Intake Manifold Mnto
Washer, Spring
Screw, Seres
Lock, Muffler Screw
Carburetor Assembly
Body Assembly, Upper Carburetor
Bushing, Throttle Shaft
** Valve Assembly, Carburetor Idle
Screw, Sems, Throttle and Choke
Valve Mounting
Valve, Throttle
Shaft and Lever, Throttle
Screw, Machine, Fillister Head
Spring, Throttle Adjustment
** Gasket, Carburetor Body
Float, Carburetor
** Pin, Float Hinge
** Valve, Fuel Inlet
Body, Lower Carburetor
Valve, Choke
Shaft and Lever, Choke
O-Ring
Jet, Needle Valve
Screw, Sems, Hex Head
Washer, Lock
Carburetor Overhaul Kit
Plug, Welch
Body, Air Cleaner
Nut, Wing
Line, Fuel, 28" (Cut to Suit)
Screw, Hex Head
Link, Governor
Link, Throttle
Crank, Bell
Crank, Bell
Screw, Shoulder
Nut, Square
Spring, Compression
Spring, Governor
Spring, Governor Idle
*
Included in Gasket Set (49!856)
**
Included in Carburetor Overhaul Kit (491539)
_**
inciuded in both Gasket Set t,+=......
_8_),' and
Carburetor Overhaul Kit (491539)
NOTE: All component dimensions given in UoS. inches
t inch =-- 2 5°4 mm
52
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