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REPAnR PARTS.
TRACTOR - - MODEL NUMBER 917.256531
BRIGGS & STRATTON ENGINE - MODEL NUMBER 28N707, TYPE NUMBER 0173-01
KEY PART KEY PART
NO. NO. DESCRIPTION NO, NO. DESCRIPTION
1 496412
2 399265
3 391086
5 495858
7 272614
8 495735
9 27803
10 94621
tl 281246
12 271916
271997
271996
13 94728
15 94239
16 495162
94196
t8 494238
20 291675
22 94624
23 492326
24
25
26
" 27
28
29
32
32A
33
34
35
37
4O
45
46
5t
52
53
75
78
222698
49586O
495977
495978
495979
495854
495852
495851
495855
260924
299691
391286
494504
495490
94695
94648
495856
495857
262811
224502
224641
262411
496884
272465
272569
94637
224061
94832
Cylinder Assembly 95
Bearing, Cylinder' 98
* Seal, Oil 104
*** Head, Cylinder 105
Gasket, Cylinder Head 106
Breather Assembly 108
* Gasket, Valve Cover 117
Screw, Sems 118
Tube, Breather 121
* Gasket, Crankcase Cover, o015" 123
* Gasket, Crankcase Cover, .005" 125
* Gasket, Crankcase Cover, .009" 127
Screw, Cylinder Head 130
Plug, Oil Drain 131
Crankshaft 133
Timing Gear' Key 137
Base, Engine 138
* Seal, Oil 141
Screw, Sems, Base Mounting 142
Flywheel and Ring Gear Assembly, 147
Magneto 164
Key, Flywheel 166
Piston Assembly, Standard Size 171
Piston Assembly, _010" Oversize 187
Piston Assembly, ..020" Oversize 188
Piston Assembly, .030" Oversize 192
Ring Set, Piston, Standard Size 201
Ring Set, Piston, .010" Oversize 209
Ring Set, Piston, ..020" Oversize 216
Ring Set, Piston, .030" Oversize 219
Lock, Piston Pin 222
Pin Assyo, Piston, Standard Size 224
Pin Assy.., Piston, °005" Oversize 225
Rod Assembly, Connecting 227
Rod Assembly; Connecting, 230
.020" Undersize Crankpin Bore 232
Screw, Hex Washer Head, 1-57/64 238
Screw, Hex Washer Head, 1-5/8 240
Valve, Exhaust 265
Valve, Intake 284
Spring, Valve
Guard, Flywheel
Retainer, Valve Spring
Tappet, Valve
Gear, Cam
**** Gasket, Carburetor (Carburetor' to
Elbow) (Also Included in Gasket
Set, Pa_t Number 495993)
*** Gasket, Carburetor
(Elbow to Cylinder)
Stud, Carburetor' Mounting
Washer, Spring
Screw, Pan Head
94098
495800
231789
231855
231854
224540
231858
495932
498116
94616
498051
224539
494379
494381
281165
281164
495931
23 t 859
497472
214047
94555
281051
393815
94627
492160
262767
260695
262766
490815
495611
94729
495157
493935
94742
262785
262836
394358
221535
94704
** Screw, Throttle
Screw, Idle Speed
** Pin, Float Hinge
** Valve Float
** Seat, Inlet Valve
Valve, Choke
** Jet, Needle Valve
Valve, Needle
Carburetor OverhauI Kit
Screw, Elbow Mounting
Carburetor Assembly
** Plug, Welch (Sold in Kit Only)
Valve, Throttle
Shaft and Lever, Throttle
Float, Carburetor
**** Gasket, Float Bowl
.... Washer, Bowl
Shaft and Lever, Choke
** Nozzle, Carburetor
** Pilot, Jet
Elbow, Carburetor
Stud, Rocker' Arm
Nut, Air Cleaner Mounting
Line, Fuel (11" Long, Cut to Suit)
Screw, Sems
Screw Assembly, Rocker Arm
Link, Governor
Spring, Governor'
Link, Choke
Gear, Governor
PFate, Governor Control
Screw, Sems, Air Cleaner
Crank, Governor
Lever' Assembly, Governor
Washer, Governor Crank
Spring, Governor Link
Cap, Valve
Filter, Fuel (in Fue! Line)
Clamp, Casing
Screw, Hex Head
* Included in Gasket Set (495993)
** Included in Carburetor Kit (497535)
*** Included in both Gasket Set (495993) and
Valve Overhaul Kit (495992)
**** included in Gasket Set (495993), Carburetor' Kit
(497535) and Carburetor Gasket Set (494385)
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 turn
54
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