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REPAIR PARTS
12.5 HP 42" RIDING LAWN TRACTOR - = MODEL NUMBER 917.255581
BRIGGS & STRA'I-I'ON ENGINE oMODEL NUMBER 286707, TYPE NUMBER 0437-01
KEY PART KEY PART
NO, NO. DESCRIPTION NO. NO. DESCRIPTION
1 490450
2 261623
3 391086
5 494240
7 271866
8 391406
9 27803
10 94621
11 280100
12 271916
271997
271996
13 94622
14 93415
15 94239
16 49O466
94196
18 494238
20 291675
22 94624
23 492326
24 222698
25 394661
394662
394663
394664
26 391780
392331
391781
391782
391783
27 260924
28 299691
391286
29 490348
490469
31
32
33
34
35
36
37,
40
41
42
45
46
51
52
53
75
222299
92909
262246
262247
65906
26828
223752
221596
292260
93630
262248
212897
281170
270872
94637
224O61
Cylinder Assembly 78 93805
Bearing, Cylinder (Requires Special 95 94098
Tools For Installation) 98 494382
* Seal, Oil 104 231789
Head, Cylinder 105 231790
* Gasket, Cylinder Head 106 281169
Breather Assembly 108 224540
Gasket, Valve Cover 118 494383
Screw, Sems 121 494384
Tube, Breather
* Gasket, Crankcase Cover 1/64" 123 94616
* Gasket, Crankcase Cover .005" 125 494392
* Gasket, Crankcase Cover .009"
Screw, Cylinder Head 3" 130 224539
Screw, Cylinder Head 3/4" 131 494379
Plug, Oil Drain 133 494381
Crankshaft 137 281165
Key,'lqming Gear 138 281164
Base, Engine 141 494380
* Seal, Oil 142 231793
Screw, Sems, Base Mounting 494499
Flywheel and Ring Gear Assembly,
Magneto
Key, Rywheel 147 231794
Piston Assembly, Standard 164 213811
Piston Assembly .010" Oversize 171 281051
Piston Assembly .020" Oversize 187 393815
Piston Assembly .030" Oversize 188 93535
Ring Set, Piston, Standard 201 262767
Ring Set, Piston, Chrome, Standard 209 260871
Ring Set, Piston .010" Oversize 216 262766
Ring Set, Piston .020" Oversize 219 490815
Ring Set, Piston .030" Oversize
Lock, Piston Pin 222 494887
Pin Assembly, Piston, Standard
Pin Assembly, Piston .005" Over 224 94513
Rod Assembly, Connecting 225 231058
Rod Assembly, Connecting 227 493935
.020" Undersize Crankpin Bore 230 222450
Lock, Connecting Rod Screw 232 262785
Screw, Connecting Rod 240 394358
Valve, Exhaust 265 221535
Valve, Intake 284 94419
Spring, Intake Valve 284A 94326
Spring, Exhaust Valve 304 224504
Guard, Flywheel 305 94619
Retainer, Intake Valve
Rotocoil, Exhaust Valve 306 224545
Retainer, Exhaust Valve Rotocoil 307 94623
Tappet-Valve 308 491490
Gear, Cam
Screw, Sems
** Screw, Throttle
Screw, Idle Speed
** Pin, Float Hinge
** Valve Assembly, Inlet Needle
Inlet Valve Seat
Valve, Choke
** Valve, Needle
Carburetor Overhaul Kit (Includes
Items marked ** and ***)
Screw, Elbow Mounting
Carburetor Assembly
(Choke-A-Matic)
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, 11 (Cut To Suit)
Screw, Sems 3/4"
Link, Governor
Spring, Governor
Link, Choke
Oil Slinger, Governor Gear and
Bracket Assembly
Plate, Governor Control
_Choke-A-Matic)
crew, Sem, Air Cleaner
Crank, Governor, 1/4" Diameter
Lever Assembly, Governor
Washer, Governor Crank, 1/4" I.D.
Spring, Governor Link
Filter, Fuel
Clamp, Casing
Screw, Clamp Mounting
Screw, Air Cleaner
Housing, Blower, Red
Screw, Sems, Blower Housing
Mounting
Shield, Cylinder
Screw, Sems, Cylinder Shield Mtg.
Cover, Cylinder Head
*** Gasket, Carburetor * Included in Gasket Set (494241)
(Carburetor to Etbow) ** Included in Carburetor Overhaul Kit (494384)
* Gasket, Carburetor Ihcluded iii b0th Carburetor OVerhaUl Kit (494384)
(Elbow to Cylinder) and Carburetor Gasket Set (494386)
Stud, Carburetor Mounting
Washer, Spring NOTE; All component dimensions given in U.S. inches
1 inch = 25.4 mm
49
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