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TRACTOR o o MODEL NUMBER 917.273631
BRmGGS & STRATTON ENGmNE=MODEL NUMBER 31P777,TYPE NUMBER 0348=E1
KEY PART KEY PART
NO. NO. DESCRiPTiON NO. NO. DESCRmPTmON
1 697174 Cylinder Assembly 108 690464 Valve-Choke (Manual Choke)
2 399265 Kit-Bushing/Sea! 108A 692344 Valve-Choke (Choke A Matic)
(MagnetoSide) 117 694352 © Jet-Main (Standard)
3 391086 ,, SeaFOiI (Magneto Side) 118 697228 Jet-Main (High Altitude)
4 697188 Sump-Engine 121 697241 Kit-Carburetor Overhaul
5 698147 Head-CyIinder 125 698445 Carburetor
7 699168 ,,+ Gasket-Cylinder Head 127 695005 Plug-Welch
9 697109 ,, Gasket-Breather 130 691750 Valve-Throttle
11 697113 Tube-Breather 131 494379 Kit-Throttle Shaft
12 697110 ,, Gasket-Crankcase 133 494381 Float-Carburetor
13 690360 Screw (Cylinder Head) 137 281165 {3$ Gasket-Float Bowl
15 690946 Plug-Oil Drain 141 495097 Kit-Choke Shaft (Manual
16 697127 Crankshaft Choke)
20 690947 ,, SeaI-Oil (PT{3 Side) 141A 495931 Kit-Choke Shaft (Choke A
22 692125 Screw (Crankcase Matic)
CoverSump) 142 697140 {3 Nozzle-Carburetor
23 693556 Flywhee! 146 691639 Key-Timing
24 222698 Key-Flywheel 186 698174 Connector-Nose
25 699052 Piston Assembly (Standard) 187 697098 Line-Fuel
699054 Piston Assembly (=020" 187A 698417 Line-Fue!
Oversize) 188 691693 Screw (Control Bracket)
26 699051 Ring Set (Standard) 192 691986 Adjuster-Rocker Arm
697559 Ring Set (.020" Oversize) 202 691841 Link-Mechanica! Governor
27 698469 Lock-Piston Pin 209 692208 Spring-Governor
28 697099 Pin-Piston 216 691840 Link-Choke
29 697126 Rod-Connecting (Standard) 222 694042 Bracket-Contro!
697263 Rod-Connecting (.020" 227 691374 Lever-Governor Control
Undersize) 232 691842 Spring-Governor
32 692852 Screw (Connecting Rod) 238 691843 Cap-Valve
33 695760 Valve-Exhaust 240 691035 Filter-Fuel
34 695761 Valve-Intake 265 691024 CIamp-Casing
35 691279 Spring-Valve (Intake) 267 695134 Screw (Casing Clamp)
36 691279 Spring-Valve (Exhaust) 276 692255 {3_ Washer-Sealing
37 697352 Guard-FIywheel 304 699829 Housing-Blower
42 691752 Keeper-Valve 305 697102 Screw (Biower Housing)
43 691968 Stinger-Governor/Oil 305A 697103 Screw (BIower Housing)
45 690564 Tappet-Valve 306 697107 Shield-Cylinder
46 698492 Camshaft 307 691003 Screw (Cylinder Shield)
48 697762 Short Block 309 693551 Motor-Starter
50 690193 Manifold-Intake 310 690323 Bolt (Starter Motor)
51 692137 ,,{3_+Gasket-Intake 311 497608 Brush Set
53 690227 Stud (Carburetor) 333 492341 Armature-Magneto
54 691148 Screw (Intake Manifold) 334 691061 Screw (Magneto Armature)
73 697133 Screen-Rotating 337 691043 Plug-Spark
74 697897 Screw (Rotating Screen) 356 697089 Wire-Stop
78 691003 Screw (Flywheel Guard) 358 697191 Gasket Set-Engine
89 690283 Plug-Oil 363 19203 Flywheel Puller
93 690602 {3 Bushing-Throttle Shaft
94 498030 Kit-Hie Mixture • Included in Engine Gasket Set, Key. No=358
95 691636 Screw (Throttle VaIve) {3 Included in Carburetor OverhauI Kit, Key=No=
98 495800 Kit-Idle Speed 121
104 690525 {3 Pin-FIoat Hinge $ Inctuded in Carburetor Gasket Set, Key=No=
105 231855 {3 Valve-FIoat Needle 977
106 691780 {3 Seat-Inlet + Included in Valve Gasket Set, Key=No=1095
NOTE: AII component dimensions given in U.S. inches
1 inch = 25.4 mm
52