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TRACTOR -- MODEL NUMBER 917.273770
BRIGGS & STRATTON ENGINE-MODEL NUMBER 407577,TYPE NUMBER 0283-E1
KEY PART KEY PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION
1
2
3
4
5
5A
7
8
9
10
11
12
13
15
16
20
22
23
24
25
25
26
26
27
28
29
32
33
34
35
36
40
42
45
46
48
5O
51
51A
51B
53
54
73
74
75
89
98
104
105
108
117
118
121
122
125
127
699751 Cylinder Assembly 130 699809
499585 Kit-Bushing/Seal (Magneto Side) 131 699812
391086 .Seal-Oil (Magneto Side) 133 694914
699747 Sump-Engine 137 698781
693998 Head-Cylinder (Cylinder 1) 141 699811
693999 Head-Cylinder (Cylinder 2) 146 690979
690962 *+Gasket-Cylinder Head 165 693148
499601 Breather Assembly 187 699799
690937 *Gasket-Breather 187A 691049
690960 Screw (Breather Assembly) 188 690960
690942 Tube-Breather 192 690083
697227 *Gasket-Crankcase 209 692909
690360 Screw (Cylinder Head) 211 691019
690946 Plug-Oil Drain 212 699805
691046 Crankshaft 213 691021
690947 *Seal-Oil (PTO Side) 216 691022
694966 Screw (Engine Sump) 219 698231
691054 Flywheel 220 690412
222698 Key-Flywheel 222 698761
499588 Piston Assembly (Standard) 227 691048
499590 Piston Assembly (.020" Over- 231 690718
size) 240 691035
499604 Ring Set-Piston (Standard) 250 690957
499606 Ring Set-Piston (.020" Oversize) 252 690956
690975 Lock-Piston Pin 265 691024
690229 Pin-Piston 267 695134
499583 Rod-Connecting 276 695410
690976 Screw (Connecting Rod) 287 690960
499596 Valve-Exhaust 304 695277
499597 Valve-Intake 305 691005
690963 Spring-Valve (Intake) 309 497595
690963 Spring-Valve (Exhaust) 310 690323
690964 Retainer-Valve 311 497608
499586 Keeper-Valve 332 691059
690977 Tappet-Valve 333 691060
699748 Camshaft 334 691061
692714 Short Block 337 691043
699801 Manifold-Intake 358 699823
690949 +* OSGasket-tntake 363 691062
699803 +* OSGasket-tntake 383 690966
699800 +* OSGasket-tntake 385 690960
690951 Stud (Carburetor) 387 808656
699816 Screw (Intake Manifold) 404 690442
691055 Screen-Rotating 405 697820
691057 Screw (Rotating Screen) 431 699806
691056 Washer (Flywheel) 445 499486
690283 Plug-Oil 447 691003
699721 Kit-Idle Speed 447A 690960
694918 QPin-Float Hinge
698537 QValve-Float Needle
699808 Valve-Choke
698784 Jet-Main (Standard)
699820 Jet-Main (High A_titude)
699814 Kit-Carburetor Overhaul
699802 Spacer-Carburetor +
699807 Carburetor
699810 Plug-Welch
Valve-Throttle
Kit-Throttle Shaft
Float-Carburetor
OGasket-Float Bowl
Kit-Choke Shaft
Key-Timing
Nut (Ring Gear)
Line-Fuel
Line-Fuel (Molded)
Screw (Control Bracket)
Adjuster-Rocker Arm
Spring-Governor
Spring-Governed Idle
Link-Throttle
Bracket-Choke Control
Link-Choke
Gear-Governor
Washer (Governor Lever)
Bracket-Control
Lever-Governor Control
Screw (Choke Valve)
Filter-Fuel
Retainer-Breather
Collector-Oil
Clamp-Casing
Screw (Casing Clamp)
+Washer-Sealing
Screw (Dipstick Tube)
Housing-Blower
Screw (Blower Housing)
Motor-Starter
Bolt (Starter Motor)
Brush Set
Nut (Flywheel)
Armature-Magneto
Screw (Magneto Armature)
Spark Plug
Set-Engine Gasket
Flywheel Puller
Wrench-Spark Plug
Screw (Fuel Pump)
Pump-Fuel
Washer (Governor Crank)
Screw (Back Plate)
Elbow-Intake
Filter-Air Cleaner Cartridge
Screw (Air Guide Cover)
Screw (Air Guide Cover)
Included in Engine Gasket Set, Key. No. 358
Included in Carburetor Overhaul Kit, Key. No.
121
Included in Carburetor Gasket Set, Key. No.
977
Included inValve Gasket Set, Key. No. 1095
NOTE: All component dimensions given in U.S. inches
1inch = 25.4 mm
53