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REPAUR PARTS
TRACTOR - - MODEL NUMBER 917.256670
BRIGGS & STRATTON ENGINE - MODEL NUMBER 42A707, TYPE NUMBER 1625-01
KEY PART KEY PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION
1 497074 Cylinder Assembly 54 94764 Screw, Sems
2 399265 Bushing 75 222511 Washer, Spring
3 391086 *Seal, Oil 78 94326 Screw, Seres
5 493457 Head, Cylinder#1 90 495181 Carburetor
5A 493458 Head, Cylinder#2 91 495035 Body Assembly, Upper
7 271867 -* Gasket, Cylinder Head #1 93 231209 Bushing, Throttle Shaft
7A 271868 ,* Gasket, Cylinder Head #2 94 491538 ** Valve, Idle Adjust
8 495754 Breather Assembly #1 95 93499 Screw, Seres
8A 222892 Cover, Breather Cylinder #2 96 221939 Vatve, Throttle
(Used Only on Key #572, 97 392672 Shaft, Throttle
Air Baffle with Holes for Mounting) 98 91920 Screw, Fillister Head
9 27803 ,*Gasket, Breather 99 26157 Spring, Throttle Adjust
10 94382 Screw, Seres 102 271607 ** Gasket, Carburetor Body
10A 94830 Screw, Seres 103 298514 Float, Carburetor
11 280225 Tube, Breather 104 230896 **Pin, Float Hinge
12 271703 * Gasket, Crankcase, .015" Thick 105 394683 ** Valve, Needle
271188 * Gasket, Crankcase, .005" Thick 107 491543 Body Assembly, Lower
271!89 * Gasket, Crankcase, _.009"Thick 108 223534 Valve, Choke
13 94565 Screw, Cylinder Head 109 392673 Shaft, Choke
15 94239 Plug, Oil Drain 116 280474 * O-Ring
16 394028 Crankshaft 117 231338 Jet, Needle Vaive, Fixed
94196 Timing Gear Key 231333 Jet, Needle Valve, Fixed,
18 493304 Sump, Engine High Altitude
20 291675 *Sea], Oil 119 94152 Screw, Hex Head
22 94724 Screw, Seres 121 491539 Carburetor Kit
23 491180 Flywheel 127 223472 ** Plug, Welch
24 222698 Key, Flywheel 161 496599 Base, Air Cleaner
25 498584 Piston Assembly, Standard Size 165 94289 Nut, Wing
498585 Piston Assembly, .010" Oversize 187 299146 Line, Fuel, 28" Long (Cut to Suit)
498586 Piston Assembly, .020" Oversize 188 94627 Screw
498587 Piston Assembly, .030" Oversize 201 262683 Link
26 394959 Ring Set, Standard Size 202 262684 Link
394960 Ring Set, .010" Oversize 203 280997 Crank, Bell
394961 Ring Set, .020" Oversize 205 93971 Screw, Hex Head
394962 Ring Set, .030" Oversize 206 94298 Nut, Square
27 263129 Lock, Piston Pin 207 262337 Spring, Control Rod
28 299691 Pin, Piston, Standard Size 209 262352 Spring, Governor
391286 Pin, Piston, °005" Oversize 209A 261563 Spring, Governor Idle
29 394306 Rod, Connecting, Standard Size 219 394348 Gear, Governor
397158 Rod, Connecting, .020" Undersize 219A 393415 Oil Slinger
32 94671 Screw, Connecting Rod 220 222773 Washer, Thrust
33 390420 Valve, Exhaust 222 491282 Bracket, Control
34 26t 528 Valve, Intake 224 94297 Screw, Pan Head
35 65906 Spring, Valve, Intake 227 491297 Lever Assembly, Governor
36 26828 Spring, Valve, Exhaust 229 62I 99 Washer
40 221596 Retainer, Valve, Intake
41 292260 Retainer, Valve, Exhaust * Included in Gasket Set (495868)
42 494553 Keeper, Valve
45 261368 Tappet, Valve ** Included in Carburetor Kit (491539)
46 213520 Gear, Cam
50 213290 Manifold, Intake *** Included in Carburetor Kit (491539),
51 271412 **** Gasket, Carburetor Mounting and Pump Repair Kit (393397)
51A 281411 Spacer, Carburetor
52 270884 ** Gasket, Intake Manifold Mounting .... Included in Gasket Set (495868),
53 93970 Screw, Hex Head, and Carbui'etor Kit (491539)
Carburetor to Manifold
• Included in Valve Overhaul Gasket Set (498047)
NOTE: All component dimensions given in U.S.. inches
1 inch = 25.4 mm
52