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TRACTOR - - MODEL NUMBER 917.270751
BRIGGS ENGINE-MODEL NUMBER 407777, TYPE NUMBER 0121-E1
KEY PART KEY PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION
1 690231 Cylinder Assembly 135 499803 Fuel Transfer Tube
2 499585 Bushing-Cylinder 137 690994 S_' Gasket-Float Bowl
3 690926 ÷ Seal-Oil 141 499807 Choke Shaft Kit
4 690069 Sump-Engine 142 499808 • Nozzle-Carburetor
5 499587 Head-Cylinder No. 1 146 94388 Key-Timing
5A 499595 Head-Cylinder No. 2 150 281767 •_, Gasket-Nozzle
7 690962 +_Gasket-Cylinder Head 160 690996 Retainer-Solenoid
8 499601 Breather Assembly 163 691001 +_ Gasket-Air Cleaner
9 690937 + Gasket-Breather 177 691031 + O-Ring Seal (Dipstick)
10 690960 Screw (BreatherAssy.) 187 691050 Line-Fuel (Cut to Required
11 690942 Tube-Breather Length)
12 690945 + Gasket-Crankcase 187A691049 Line-Fuel
13 690360 Screw (Cylinder Head) 188 690960 Screw (Control Bracket)
15 690946 Plug-Oil Drain 192 690083 Adjuster-RockerArm
16 691046 Crankshaft 209 690018 Spring*Governor
20 690947 + Seal-Oil (PTO Side) 211 690019 Spring-Governed Idle
23 691053 Flywheel 212 691020 Link-Throttle
24 690974 Key-Flywheel 213 691021 Bracket-Choke Control
25 499588 Piston Assembly (Std.) 216 691022 Link-Choke
499589 Piston Assembly (.010"O.S.) 219 394348 Gear-Governor
499590 Piston Assembly (.020" O.S.) 220 690412 Washer (Governor Lever)
499591 Piston Assembly (.030" O.S.) 222 691023 Bracket-Control
26 499604 Ring Set-Piston (Std.) 227 691048 Control Lever-Governor
499605 Ring Set-Piston (.010 "O.S.) 231 690718 Screw (Choke Valve)
499606 Ring Set-Piston (.020"O.S.) 240 691035 Filter-Fuel
499607 Ring Set-Piston (.030 "O.S.) 252 690956 Element-Breather
27 690975 Lock-Piston Pin 256 690957 Retainer-Element
28 499582 Pin-Piston 258 690308 Screw (Engine Sump)
29 499583 Rod-Connecting 265 691024 Clamp-Casing
32 690976 Screw (Connecting Rod) 267 691044 Screw (Casing Clamp)
33 499596 Valve-Exhaust 276 690997 +O_- Sealing Washer
34 499597 Valve-Intake 278 690097 Washer (Gov. Control Lever)
35 690963 Spring-Valve (Intake) 287 690960 Screw (Dipstick Tube)
36 690963 Spring-Valve (Exhaust) 304 691004 Housing-Blower
40 690964 Retainer-Valve 305 691005 Screw (Blower Housing)
42 499586 Keeper-Valve 309 691262 Motor-Starter
45 690977 Valve Tappet 310 691263 Bolt-Starter Motor
46 690978 Cam Shaft 311 691264 Brush Set
48 692714 ShortBIock 332 690059 Nut (Flywheel)
50 690948 Manifold-Intake 333 691060 Armature-Magneto
51 690949 +•÷Gasket-Intake 334 691061 Screw (Armature)
51A 690950 +•e, Gasket-lntake 337 691043 Spark Plug
53 690951 Stud (Carburetor) 358 499889 Gasket Set
54 690953 Screw (Intake Manifold) 363 691062 Flywheel Puller
73 691055 Screen-Rotating 383 690966 Wrench-Spark Plug
74 691057 Screw (Rotating Screen) 385 690960 Screw (Fuel Pump)
75 691056 Washer (Flywheel) 387 691034 Pump-Fuel
89 690238 Plug-Oil 404 690442 Washer (Governor Crank)
95 690718 Screw (Throttle Valve) 405 690960 Screw (Back Plate)
98 499802 Idle Speed Kit 445 691007 Filter-Air Cleaner Cartridge
104 690984 • Pin-Float Hinge 447 691003 Screw (Air Guide Cover)
105 690985 • Valve-Float Needle 447A690960 Screw (Air Guide Cover)
108 690986 Valve-Choke 462 691261 Washer (Starter Cable)
117 690232 • Jet-Main (Standard)
1!7A690989 Jet-Main High Altitude) + Included in Gasket Set, Ref. No. 358
121 499811 Carburetor Overhaul Kit • Included in Gasket Set, Ref. No. 121
122 690952 Spacer-Carburetor _' Included in Gasket Set, Ref. No. 977
125 499804 Carburetor ÷ Included in Gasket Set, Ref. No. 1033
130 690993 Valve-Throttle
131 499805 Throttle Shaft Kit NOTE: All component dimensions given in U.S.
133 499806 Float-Carburetor inches1 inch = 25.4 mm
53