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TRACTOR - - MODEL NUMBER 917.270760
BRIGGS & STRATTON ENGINE-MODEL NO. 407777 TYPE NO. 0121-E3
KEY PART
NO. NO.
1 690231
2 499585
3 391086
4 690069
5 499587
5A 499595
7 690962
8 499601
9 690937
10 690960
11 690942
12 690945
13 690360
15 690946
16 691046
20 690947
22 690306
23 691053
24 222698
25 499588
499589
499590
499591
26 499604
499605
499606
499607
27 690978
28 499582
29 499583
32 690976
33 499596
34 499597
35 690963
36 690963
40 690964
42 499586
45 690977
46 690978
48 693893
50 690948
51 90949
51A 690950
53 690951
54 690953
73 691055
74 691057
75 691056
89 690283
95 690718
98 499802
104 690984
105 690985
108 690986
117 690232
690989
KEY PART
DESCRIPTION NO. NO. DESCRIPTION
Cylinder Assembly 121 499811
Bushing-Cylinder 122 690952
125 499804
* Seal-Oil 130 690993
Sump-Engine 131 499805
Head-Cylinder No. t
Head-Cylinder No. 2 133 499806
_,_Gasket-Cylinder Head 135 499803
137 690994
Breather Assembly 141 499807
Gasket-Breather 142 499808
Screw (Breather Assy.) 146 94388
Tube-Breather 150 690995
Gasket-Crankcase 160 690996
Screw (Cylinder Head) 163 691001
Plug-Oil Drain
Crankshaft 187 691050
Seal-Oil (PTO Side)
Screw (Engine Sump) 187A691049
168 690960
Flywheel
Key-Flywheel 192 690083
197 690960
Piston Assembly (Std.)
Piston Assembly (.010 O.S.) 209 691018
Piston Assembly (.020 O.S.) 211 691019
Piston Assembly (.030 O.S.) 212 691020
Ring Set-Piston (Std.) 213 691021
Ring Set-Piston (.010 O.S.) 2t6 691022
Ring Set-Piston (.020 O.S,) 219 394348
Ring Set-Piston (.030 O.S.) 220 690412
222 691023
Lock-Piston Pin 227 691048
Pin-Piston 231 690718
Rod-Connecting
Screw (Connecting Rod) 240 691035
250 69O957
Valve-Exhaust 252 690956
Valve-Intake 265 691024
Spring-Valve (Intake)
Spring-Valve (Exhaust) 267 695134
276 690997
Retainer-Valve 278 690097
Keeper-Valve 287 690960
Valve Tappet 304 691004
Cam Shaft 305 691005
Short Block 309 691262
Manifold-Intake 310 691263
_rO_Gasket-lntake 311 497608
*O•Gasket-lntake 332 691059
Stud (Carburetor) 333 691060
Screw (Intake Manifold) 334 691061
Screen-Rotating
Screw (Rotating Screen) 337 691043
Washer (Flywheel) 358 499889
363 691062
Plug-Oil
Screw (Throttle Valve) * Included
Idle Speed Kit • Included
• Pin-Float Hinge 121
• Valve*Float Needle • Included
Valve-Choke 977
• Jet-Main (Standard) • Included
Jet-Main (High Altitude) 1033
Carburetor Overhaul Kit
Spacer-Carburetor
Carburetor
Valve-Throttle
Throttle Shaft Kit
Float-Carburetor
Fuel Transfer Tube
• •Gasket-Float Bowl
Choke Shaft Kit
• Nozzle-Carburetor
Key-Timing
0• Gasket-Nozzle
Retainer-Solenoid
• _Gasket-Air Cleaner
Line-Fuel (Cut to Required
Length)
Line*Fuel
Screw (Control Bracket)
Adjuster-Rocker Arm
Screw (Back Plate)
Spring-Governor
Spring-Governod Idle
Link-Throttle
Bracket-Choke Control
Link-Choke
Gear-Governor
Washer (Governor Lever)
Bracket-Control
Control Lever-Governor
Screw (Choke Valve)
Filter-Fuel
Retainer-Breather
Element-Breather
Clamp-Casing
Screw (Casing Clamp)
-kQe,Sealing Washer
Washer (Gov. Control Lever)
Screw (Dipstick Tube)
Housing-Blower
Screw (Blower Housing)
Motor-Starter
Bolt-Starter Motor
Brush Set
Nut (Flywheel)
Armature-Magneto
Screw (Magneto Armature)
Spark Plug
Gasket Set
Flywheel Puller
in Engine Gasket Set, Ref. No. 358
in Carburetor Overhaul Kit, Ref. No.
in Carburetor Gasket Set, Ref. No.
in Valve Overhaul Kit, Ref. No.
NOTE: All component dimensions given in U.S.
inches 1 inch = 25.4 mm
55