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TRACTOR - - MODEL NUMBER 917.273390
BRIGGS ENGINE-MODEL NUMBER 31H777,TYPE NUMBER 0297-E1
KEY PART KEY PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION
1 697174 Cylinder Assembly 106 690577 a Seat-Inlet
2 399265 Kit-Bushing/Seal (Magneto Side) 108 690464 Valve-Choke (Manual Choke)
3 391086 ° Seal-Oil (Magneto Side) 108A 695419 Valve-Choke (Nikki)
4 697188 Sump-Engine 117 694352 a Jet-Main (Standard)
5 698147 Head-Cylinder 117A 699457 a Jet-Main (Standard) (Nikki)
7 699168 °+ Gasket-Cylinder Head 118 697228 Jet-Main (High Altitude)
9 697109 ° Gasket-Breather 118A 699458 Jet-Main (High Altitude) (Nikki)
11 697113 Tube-Breather 121 697241 Kit-Carburetor Overhaul
12 697110 ° Gasket-Crankcase 121A 699521 Kit-Carburetor Overhaul (Nikki)
13 690360 Screw (Cylinder Head) 125 698445 Carburetor
15 690946 Plug-Oil Drain 125A Carburetor (For Complete
16 697127 Crankshaft Carburetor, Service with
20 690947 ° Seal-Oil (PTO Side) 698445)
22 692125 Screw (Crankcase Cever/Sump) 127 695005 Plug-Welch
23 693557 Flywheel 127A 690727 a Plug-Welch (Nikki)
24 222698 Key-Flywheel 130 691750 Valve-Throttle
25 699052 Piston Assembly (Standard) 130A 699500 Valve-Throttle (Nikki)
-- 699054 Piston Assembly (.020" 131 494379 Kit-Throttle Shaft
Oversize) 131A 699501 Kit-Throttle Shaft (Nikki)
26 699051 Ring Set (Standard) 133 494381 Float-Carburetor
-- 697559 Ring Set (.020"Oversize) 133A 694914 Float-Carburetor (Nikki)
27 698469 Lock-Piston Pin 135 698780 Tube-Fuel Transfer
28 697099 Pin-Piston 137 281165 G_ Gasket-Float Bowl
29 697126 Red-Connecting (Standard) 137A 698781 G Gasket-Float Bowl (Nikki)
-- 697263 Red-Connecting (.020" 141 495097 Kit-Choke Shaft (Manual Choke)
Undersize) 141A 698778 Kit-Choke Shaft (Nikki)
32 692852 Screw (Connecting Rod) 142 697140 G Nozzle-Carburetor
33 695760 Valve-Exhaust 146 691639 Key-Timing
34 695761 Valve-intake 187 697098 Line-Fuel
35 691279 Spring-Valve (Intake) 188 691693 Screw (Control Bracket)
36 691279 Spring-Valve (Exhaust) 192 691986 Adjuster-Rocker Arm
37 697108 Guard-Flywheel 202 691841 Link-Mechanical Governor
40 691752 Retainer-Valve 209 692208 Spring-Governor
43 691968 Slinger-Governor/Oil 216 691840 Link-Choke
45 690564 Tappet-Valve 222 694042 Bracket-Control
46 698492 Camshaft 227 691374 Lever-Governor Control
48 697762 Short Block 231 691636 Screw (Choke Valve)
50 690193 Manifold-intake 232 691842 Spring-Governor
51 692137 .G_:+ Gasket-Intake 238 691843 Cap-Valve
53 690227 Stud (Carburetor) 240 394358 Filter-Fuel
54 691148 Screw (Intake Manifold) 265 691024 Clamp-Casing
73 697133 Screen-Rotating 267 695134 Screw (Casing Clamp)
74 697897 Screw (Rotating Screen) 276 692255 G_:Washer-Sealing
78 691003 Screw (Flywheel Guard) 276A 695410 Washer-Sealing
89 690283 Plug-Oil 304 697783 Housing-Blower
93 690602 O Bushing-Throttle Shaft 305 697102 Screw (Blower Housing)
94 498030 Kit-Idle Mixture 305A 697103 Screw (Blower Housing)
94A 695425 Kit-Idle Mixture (Nikki) 306 697107 Shield-Cylinder
95 691636 Screw (Throttle Valve) 307 691003 Screw (Cylinder Shield)
95A 690718 O Screw (Throttle Valve (Nikki)
98 495800 Kit-Idle Speed included in Engine Gasket Set, Key. No. 358
98A 695408 Kit-Idle Speed (Nikki) a included in Carburetor Overhaul Kit, Key. No.
104 690525 O Pin-Float Hinge 121
104A 694918 O Pin-Float Hinge (Nikki) _: included in Carburetor Gasket Set, Key. No.
105 231855 O Valve-Float Needle 977
105A 696136 O Valve-Float Needle (Nikki) + Included in Valve Gasket Set, Key. No. 1095
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
51