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TRACTOR
- - MODEL
NUMBER
917.273590
BRIGGS & STRATTON ENGINE-MODEL
NUMBER 31P777, TYPE NUMBER 0348-E1
KEY
PART
KEY
PART
NO.
NO.
DESCRIPTION
NO.
NO.
DESCRIPTION
1
697174
Cylinder
Assembly
108
690464
Valve-Choke
(Manual
Choke)
2
399265
Kit-Bushing/Seal
108A
692344
Valve-Choke
(Choke
A Mat!c)
(MagnetoS!de)
117
694352
O
Jet-Main
(Standard)
3
391086
•
Seal-Oi!
(Magneto
Side)
118
697228
Jet-Main
(High Altitude)
4
697188
Sump-Engine
121
697241
Kit-Carburetor
Overhaul
5
698147
Head-Cylinder
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
O_:
Gasket-Float
Bowl
15
690946
Plug-Oil
Drain
141
495097
Kit-Choke
Shaft (Manual
16
697127
Crankshaft
Choke)
20
690947
•
Seal-Oil
(PTO Side)
141A
495931
Kit-Choke
Shaft (Choke
A
22
692125
Screw
(Crankcase
Mat!c)
CoverSump)
142
697140
O
Nozzle-Carburetor
23
693556
Flywhee!
146
691639
Key-Timing
24
222698
Key-Flywheel
186
698174
Connector-Hose
25
699052
Piston Assembly
(Standard)
187
697098
Line-Fuel
699054
Piston Assembly
(.020"
187A
698417
Line-Fuel
Oversize)
188
691693
Screw
(Contro!
Bracket)
26
699051
Ring Set (Standard)
192
691986
Adjuster-Rocker
Arm
697559
Ring Set (.020" Oversize)
202
691841
Link-Mechanical
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-Control
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
Valveqntake
265
691024
Clamp-Casing
35
691279
Spring-Valve
(Intake)
267
695134
Screw
(Casing
Clamp)
36
691279
SpringWalve
(Exhaust)
276
692255
O:!t:
Washer-Sealing
37
697352
Guard-Flywhee!
304
699829
Housing-Blower
42
691752
Keeper-Valve
305
697102
Screw
(Blower
Housing)
43
691968
Slinger-Governor/Oil
305A
697103
Screw
(Blower
Housing)
45
690564
Tappet-\!alve
306
697107
Shield-Cylinder
46
698492
Camshaft
307
691003
Screw
(Cylinder
Shield)
48
697762
Short
Block
309
693551
Motor-Starter
50
690193
Manifoldqntake
310
690323
Bolt (Starter
Motor)
51
692137
,_+
Gasketqntake
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
O
Bushing-Throttle
Shaft
94
498030
Kit-Idle
Mixture
included
in Engine Gasket
Set, Key. No. 358
95
691636
Screw
(Throttle
Valve)
O
included
in Carburetor
Overhaul
Kit, Key. No.
98
495800
Kitqdle
Speed
121
104
690525
O
Pin-Float
Hinge
_:
included
in Carburetor
Gasket
Set, Key. No.
105
231855
O
Valve-Float
Needle
977
106
691780
O
Seatqnlet
+
included
in Valve
Gasket
Set, Key. No. 1095
NOTE: All component dimensions given in U,S. inches
1 inch = 25.4 mm
52
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