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REPAIR PARTS
12 HP 38" TRACTOR - - MODEL NUMBER 917.255561
BRIGGS & STRATTON ENGINE - MODEL NUMBER 283707, TYPE NUMBER 0217-01
KEY PART KEY PART
NO. NO, DESCRIPTION NO. NO. DESCRIPTION
1 490450
2 399265
3 391086
5 494240
7 271866
8 391406
9 27803
10 93394
11 280100
12 271916
271997
271996
13 93723
15 94239
16 490466
94196
18 494238
20 291675
22 94305
23 492326
24 222698
25 394661
394662
394663
394664
26 391780
392331
391781
391782
391783
27 260924
28 299691
391286
29 490348
490469
31 222299
32 92909
33 262246
34 262247
35 65906
36 26828
37 223752
40 221596
41 292260
42 93630
45 262248
46 212897
51 272465
52 270872
Cylinder Assembly 53 94637
Bearing, Cylinder (Requires Special 75 224061
Tools For Installation) 78 93805
* Seat, Oil 95 94098
Head, Cylinder 98 494382
* Gasket, Cylinder Head 104 231789
Breather Assembly 105 231790
* Gasket, Valve Cover 106 281t69
Screw, Sems 108 224540
Tube, Breather 118 494383
* Gasket, Crankcase Cover 1/64" 121 494384
* Gasket, Crankcase Cover .005" 123 94616
*Gasket, Crankcase Cover .009" 125 494502
Screw, Cylinder Head 127 - - -
Plug, Oil Drain 130 224539
Crankshaft 131 494379
Key, Timing Gear 133 494381
Base, Engine 137 281165
* Seat, Oil 138 281164
Screw, Sems, Base Mounting 141 494380
Flywheel and Ring Gear Assembly, 142 494537
Magneto 494499
Key, Flywheel
Piston Assembly, Standard
Piston Assembly .010" Oversize 147 231794
Piston Assembly .020" Oversize 164 213819
Piston Assembly .030" Oversize 171 281051
Ring Set, Piston, Standard Size 187 393815
Ring Set, Piston, Chrome, Standard 188 93535
Ring Set, Piston .010" Oversize 201 262767
Ring Set, Piston .020" Oversize 209 260871
Ring Set, Piston .030" Oversize 216 262766
Lock, Piston Pin 219 490815
Pin Assembly, Piston, Standard
Pin Assy,, Piston .005" Oversize 222 494887
Rod Assembly, Connecting
Rod Assembly, Connecting, 224 94513
.020" Undersize Crankpin Bore 225 231058
Lock, Connecting Rod Screw 227 493935
Screw, Connecting Rod 230 222450
Valve, Exhaust 232 262785
Valve, Intake 240 394358
Spring, Intake Valve
Spring, Exhaust Valve
Guard, Flywheel
Retainer, Intake Valve
Rotocoil, Exhaust Valve
Retainer, Exhaust Valve Rotocoit
Tappet, Valve
Gear, Cam
*** Gasket, Carburetor (Carburetor to
Elbow)
* Gasket, Carburetor (Elbow to
Cylinder)
Stud, Carburetor Mounting
Washer, Spring
Screw, Sems
** Screw, Throttle
Screw, Idle Speed
** Pin, Float Hinge
**Valve Assembly, Inlet Needle
Inlet, Valve Seat
Valve, Choke
**Valve, Needle
Carburetor Overhaul Kit
Screw, Elbow Mounting
Carburetor Assembly
** Plug, Welch (Sold in Kit Only)
Valve, Throttle
Shaft and Lever, Throttle
Float, Carburetor
*** Gasket, Float Bowl
*** Washer, Float Bowl Screw
** Shaft and Lever, Choke
** Nozzle / Jet, Carburetor
High Altitude Kit:
231796 Pilot, Jet, High Altitude
281164 Seal, Bowl Screw
** Pilot, Jet
Carburetor, Elbow
Nut, Air Cleaner Mounting
Line, Fuel
Screw, Sems
Link, Governor
Spring, Governor
Link, Choke
Oil Slinger, Governor Gear and
Bracket Assembly
Plate, Governor Control
(Choke-A-Matic)
Screw, Sems, Air Cleaner
Crank, Governor
Lever Assembly, Governor
Washer, Governor Crank
Spring, Governor Link
Filter, Fuel
* Included in Gasket Set (494241)
** Included in Carburetor Overhaul Kit (494384)
*** Included in both Carburetor Overhaul Kit (494384)
and Carburetor Gasket Set (494385)
NOTE: All component dimensions given in U°S, inches
1 inch = 25.4 mm
47