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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 =--25°4 mm
52
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