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REPAIR PARTS
18 HP 44" TRACTOR
- - MODEL
NUMBER
917.255890
BRIGGS & STRATTON
ENGINE - MODEL NUMBER 422707, TYPE NUMBER 1254-01
KEY PART
KEY PART
NO. NO.
DESCRIPTION
NO. NO.
DESCRIPTION
1
494533
2
399265
3
391086
5-1
493457
5-2
493458
7-1
271867
7-2
271868
8-1
398065
8-2
222892
9
10
11
12
13
15
15A
16
18
2O
21
22
23
24
25
26
27
28
29
32
33
34
35
36
40
41
42
45
46
27803
94382
280225
271703
271188
271189
94565
94239
94497
394028
94196
493304
291675
399195
90887
491180
222698
394955
394956
394957
394958
394959
394960
394961
394962
260924
299691
391286
394306
397158
94671
390420
261528
65906
26828
221596
292260
93630
261368
213421
Cylinder Assembly
50
213290
Bearing, Cylinder
51
271412
Seal, Oil
51A 280319
Head, Cylinder Number I
52
270884
Head, Cylinder Number 2
53
93970
* Gasket, Cylinder Head Number 1
54
93208
* Gasket, Cylinder Head Number 2
75
222511
Breather Assembly Number 1
78
94326
Cover, Breather, Cylinder Number 2
81
223016
(Use with Key Number 572,
90
495181
Air Baffle with Mounting Holes)
91
495035
* Gasket, Valve Cover
93
231209
Screw, Seres
94
491538
Tube, Breather
95
93499
* Gasket, Crankcase Cover, 1/64"
* Gasket, Crankcase Cover, .005"
96
221939
* Gasket, Crankcase Cover, .009"
97
392672
Screw, Cylinder Head
98
91920
Plug, Oil Drain
99
26157
Plug, Pipe
102 271607
Crankshaft
103 298514
Key, Timing Gear
104 230896
Base Assembly, Crankcase
105 394683
Seal, Oil
107 491543
Seal Assembly, Cylinder Plug
108 223534
Screw, Seres,
109 392673
Crankcase Cover Mounting
116 280474
Uses: 92268 Washer, Lock
117 231338
Flywheel and Ring Gear Assembly,
119 94152
Magneto
120 92290
Key, Flywheel
121 491539
Piston Assembly, Standard Size
127 223472
Piston Assembly, .010" Oversize
161 398826
Piston Assembly, .020" Oversize
165 94289
Pision Assembly,.030"
Oversize
187 299146
Ring Set, Piston, Standard Size
188 93535
Ring Set, Piston, .010" Oversize
201 262683
Ring Set, Piston, .020" Oversize
202 262684
Ring Set, Pfston, .030" Oversize
203 280997
Lock, Pfston Pin
203A
490207
Pin Assy., Piston, Standard Size
205 93971
Pin Assy., Piston .005" Oversize
206 94298
Rod Assembly, Connecting
207 262337
Rod Assembly, Connecting,
209 262351
.020" Undersize Crankpin Bore
209A
261563
Screw, Connecting Rod
216
262375
Valve, Exhaust
219
393415
Valve, Intake
Uses: 393606 Seal Assembly and
Retainer (Key Number 868)
Spring, Intake Valve
,
Spring, Exhaust Valve
Retainer, Intake Valve
Rotocoil, Exhaust Valve
Retainer, Exhaust Valve Rotocoil(2)
Tappet, Valve
Gear, Cam
Manifold, Intake
*** Gasket, Carburetor & Intake Elbow
Spacer, Carburetor
* Gasket, Intake Manifold Mounting
Screw, Sems, Carburetor Mounting
Screw, Sems, Intake Manifold Mnt.
Washer, Spring
Screw, Sems
Lock, Muffler Screw
Carburetor Assembiy
Body Assembly, Upper Carburetor
Bushing, Throttie Shaft
** Valve Assembly, Carburetor Idle
Screw, Sems,
Throttle and Choke Valve Mounting
Vaive, Throttle
Shaft and Lever, Throttle
Screw, Machine, Fillister Head
Spring, Throttle Adjustment
** Gasket, Carburetor Body
Float, Carburetor
** Pin, Float Hinge
** Valve, Fuel Inlet
Body, Lower Carburetor
Valve, Choke
Shaft and Lever, Choke
O-Ring
Jet, Needle Valve
Screw, Sems, Hex Head
Washer, Lock
Carburetor Overhaul Kit
Plug, Welch
Body, Air Cleaner
Nut, Wing
Line, Fuel, 28" (Cut to Suit)
Screw, Hex Head
Link, Governor
Link, Throttle
Crank, Bell
Crank, Bell
Screw, Shoulder
Nut, Square
Spring, Compression
Spring, Governor
Spring, Governor Idle
Link
Oil Slinger Assembly
*
Included in Gasket Set (491856)
**
Included in Carburetor Overhaul Kit (491539)
***
Included in both Gasket Set (491856), and
Carburetor Overhaul Kit (491539)
NOTE: All component dimensions given in U.S. inches
1 inch = 25,4 mm
5O
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