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TRACTOR - - MODEL NUMBER 917.270512
BRIGGS & STRATTON ENGINE-MODEL NUMBER 287707, TYPE NUMBER 1255-E
KEY PART
NO. NO.
1 496412
2 399265
3 391086
4 494238
5 495858
7 272614
8 495735
9 278O3
10 94621
11 281246
12 271916
271997
271996
13 94728
15 94239
16 495162
94196
20 291675
22 94624
23 492326
24 222698
25 495860
495977
495978
495979
26 495854
495852
495851
495855
27 263129
28 498319
29 494504
495490
32 94695
32A 94648
33 495856
34 495857
33 262811
224_2
40 224641
45 262411
496884
51 272465
52 272569
KEY PART
DESCRIPTION NO. NO.
Cylinder Assembly 53 94637
Beadng, Cylinder 73 224948
*Seal, Oil 75 225136
Base, Engine 78 94626
Head, Cylinder 93 281346
***Gasket, Cylinder Head 95 94098
Breather Assembly 98 495800
*Gasket, Valve Cover 104 231789
Screw, Seres 105 231855
Tube, Breather 106 231854
*Gasket, Crankcase Cover, 108 224540
1/64-'- 111 262719
*Gasket, Crankcase Cover, 117 232118
.005" 232119
*Gasket, Crankcase Cover, 118 498030
.009" 121 499233
Screw, Cylinder Head 123 94913
Plug, Oil Drain 125 499153
Crankshaft 127 - - -
"[imingGear Key 130 224539
*Seal, Oil 131 494379
Screw, Sems, Base Mounting 133 49438;I
Flywheel and Ring Gear 137 281165
Assembly, Magneto 138 281164
Key, Rywheel 141 495931
PistonAssembly, Standard Size 142 232117
PistonAssembly, .01(7'
Oversize 154 214047
PistonAssembly, .020. 166 94555
Oversize 171 281051
PistonAssembly, .030. 187 492790
Oversize
Ring Set, Piston, Standard Size 188 94627
Ring Set, Piston, .010" Oversize 192 492160
Ring Set, Piston, .020" Oversize 201 262767
Ring Set, Piston, .030. Oversize 209 260695
Lock, Piston Pin 216 262766
PinAssy., Piston, Standard Size 219 490815
Rod Assembly, Connecting 222 495611
RodAssembly, Connecting, 224 94729
.020" Undersize Crankpin Born" 225 495157
Screw, Hex Washer Head, 1- 227 493935
57/64 230 94927
Screw, Hex Washer Head, 1- 232 262785
5/8 238 262836
Valve, Exhaust 240 394358
Valve, Intake 265 221535
Spdng, Valve NOTE:
Guard, Rywheel
Retainer, Valve Spdng
Tappet, Valve
Gear, Cam
"**Gasket, Carburetor
(Carburetor to Elbow)
"**Gasket, Carburetor
(Elbow toCylinder)
DESCRIPTION
Stud, Carburetor Mounting
Screen, Rush Rotating
Washer,Spring
Screw, Serns
Bushing, Throttle Shaft
**Screw, Throttle
Screw, Idle Speed
**Pin, Float Hinge
**Valve Float
**Seat, InletValve
Valve, Choke
Spdng, Choke °
Jet, Main (Std.)
Jet, Main (Hi-Air.)
Valve, Needle
Carburetor Overhaul Kit
Screw, Elbow Mounting
Carburetor Assembly
**Plug, Welch (Sold in KitOnl_
Valve,Throttle
Shaft and Lever, Throttle
Float, Carburetor
**"Gasket, Roat Bowl
****Washer, Bowl
Shaft and Lever, Choke
Nozzle, Carburetor
Elbow,Carburetor
Stud, Rocker Arm
Nut, Air Cleaner Mounting
Line, Fuel (11" Long, Cut to
Suit)
Screw, Hex Head, 3/4
Screw Assembly, Rocker Arm
Link,Governor
Spring, Governor
Link,Choke
Gear, Govemor
Plate, GoyemoT Control
Screw, Seres, Air Cleaner
Crank, Governor
Lever Assembly, Governor
Washer, Governor Crank
Spring, Governor Unk
cap,
Filter, Fuel (In Fuel Une)
Clamp, Casing
All component dimensions given in U.S. inches
1 inch = 25.4 mm
* Included In Gasket Set (495993)
** Included In Carburetor Kit(499233)
*** Included In Both Gasket Set (495993) and
Valve Overhaul I_t (495992)
**** Included In Gasket Set (495993), Carburetor K,
(499233) and Carburetor Gasket Set (494385)
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