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TRACTOR-- MODEL NUMBER 917.270923
BRIGGS &STRATTON ENGINE-MODEL NUMBER 42E707, TYPE NUMBER 2631-E3
KEY PART KEY PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION
1 498583 Cylinder Assembly 98
2 399265 Bushing 102
3 39t086 _ Seal-Oil 104
4 493304 Engine Sump 165
5 493457 Head-Cylinder #1 107 693482
5A 493458 Head-Cylinder #2 108 693505
7 271867 -k_Gasket-Cylinder Head #t 109 693498
7A 271868 _l, Gasket-Cylinder Head #2 117 693507
8 495754 Breather Assembly 693499
9 27803 _tGasket-Breather 119 690720
10 690334 Screw (Breather Cover)
! 1 280225 Tube-Breather 121 693503
12 273390 _ Gasket-Crankcase (.015 122 281411
Thick) 125 693480
271188 _" Gasket-Crankcase (.005 130 693504
Thick) 133 693512
271189 _ Gasket-Crankcase (.009 146 94196
Thick) 147 693508
12A 272645 -k Crankcase Gasket 161 691401
13 94565 Screw (Cylinder Head) 163 271411
15 94239 Oil Drain Plug (Square 165 693148
Socket) 186 230318
16 690636 Crankshaft 187 499167
18 495901 Cover-Crankcase
19 399264 Bushing 168 94930
20 291675 _ Seal-Oil 197 690364
22 693972 Screw (Engine Sump) 202 690570
22A 94724 Screw (Crankcase Cover) 203 493230
23 491180 Flywheel 205 690322
24 222698 Key-Flywheel 209 691273
25 498584 Piston Assembly (Standard) 211 261563
498585 Piston Assembly (.010 O.S,) 212 693544
498586 Piston Assembly (.020 O.S.) 212A 690571
498587 Piston Assembly (.030 O.S.) 219 394348
26 394959 Ring Set (Standard) 220 690412
394960 Ring Set (.010 O,S.) 222 691366
394961 Ring Set (,020 O.S.) 227 690762
394962 Ring Set (.030 O.S,) 231 690718
27 691299 Lock-Piston Pin 235 691206
28 498319 Pin-Piston (Standard) 240 394358
498320 Pin-Piston (,005 O.S.) 267 690316
29 394306 Rod-Connecting (Standard) 276 271013
397158 Rod-Conn. (.020 Undersize) 276A 693497
32 691133 Screw (Connecting Rod) 276B 693510
33 390420 Valve-Exhaust 278 692810
34 261528 Valve-Intake
35 65906 Spring-Valve (intake) 279 690366
36 26828 Spring-Valve (Exhaust) 297 94289
40 221596 Retainer-Valve 304 495587
40A 292260 Retainer-Valve (Exhaust)
42 494553 Keeper-Valve RPM Settings:
45 261368 Tappet-Valve
46 692857 Camsllaft
47 393415 Oil Slinger ,_ Included
48 499945 Short Block% Number
50 213290 Manifold-Intake • Included
51 271412 -_-•Gasket-lntake Number
51A 270884 -_-+Gasket-lntake _. Included
54 93208 Screw (Intake Manifold) Number
73 691438 Screen-Rotating + Included
75 225307 Wasller (Flywheel) 861.
78 691134 Screw (Rotating Screen)
91 693483 Upper Carburetor Body
95 690718 Screw (Throttle Valve)
97 693485 Shaft-Throttle
807923 Idle Speed Kit
693509 • Gasket-Carburetor Body
693506 • Pin-Float Hinge
692078 • Valve- Float Needle
Lower Carburetor Body
Valve-Choke
Shaft-Choke
Jet-Main (Standard)
Jet-Main (High Altitude)
Screw (Upper Body To
Lower Body)
Carburetor Overhaul Kit
Spacer-Carburetor
Carburetor
Valve-Throttle
Float-Carburetor
Key-Timing
Jet-Pilot
Base-Air Cleaner
-_•Gasket-Air Cleaner
Nut (Ring Gear)
Connector-Hose
Line-Fuel (Cut to Required
Length)
Screw (Control Bracket)
Screw (Back Plate)
Link-Mechanical Governor
Bell Crank
Screw (Bell Crank)
Spring-Governor
Spring-Gov. Idler
Throttle Link
Throttle Link
Gear-Governor
Washer (Governor Gear)
Bracket-Control
Lever-Governor Control
Screw (Choke Valve)
Shield-Fuel Spray
Filter-Fuel
Screw (Casing Clamp)
Washer-Sealing
-tr Washer-Sealing
Washer-Seating
Washer (Governor Control
Lever)
Screw (Valve Cover)
Nut (Air Filter Retainer)
Housing-Blower
Low Speed: 1900-2100
High Speed: 3000-3200
in Engine Gasket Set, Ref
356.
in Carburetor Overhaul Kit, Ref
121.
in Carburetor Gasket Set, Ref
1095.
in Fue_ Pump Kit, Ref Number
NOTE: All component dimensions given in U.S.
inches 1 inch = 25.4 mm
55
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