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TRACTOR
= MODEL NO. YTH2454
(287581) YTH 24 54
BRIGGS AND STRATTON
ENGINE = MODEL NO. 445677=0479
E1
KEY
NO.
1
2
3
4
5
5A
7
8
9
10
11
12
13
15
15A
16
20
22
23
24
25
26
27
28
29
32
33
34
35
36
42
45
46
48
50
51
53
54
54A
73
74
75
89
95
98
1O4
1O5
108
117
117A
118
118A
PART
NO.
699753
499585
391086s
•
699747
693998
693999
693997
"+
792185
690937
•
691108
690942
697227
•
791130
690946
691680
790132
690947
•
694966
691053
222698s
792117
792144
792026
792073
690975
690229
699699
690976
499596
697464
694865
694865
499586
690977
790562
698173
695241
791677
"O$
690951
695239
699816
494439
698425
691056
690283
690718
699721
694918
O
698537
O
699723
699732
699733
790890
699458
KEY
PART
DESCRIPTION
NO.
NO.
DESCRIPTION
Cylinder Assembly
Kit-Bushing/Seal
(Magneto Side)
Seal-Oil (Magneto Side)
Sump-Engine
Head-Cylinder (Cylinder 1)
Head-Cylinder (Cylinder 2)
Gasket-Cylinder
Head
Breather Assembly
Gasket-Breather
Screw (Breather Assembly)
Tube-Breather
Gasket-Crankcase
Screw (Cylinder Head)
Plug-Oil Drain
Plug-Oil Drain
Crankshaft
Seal-Oil (PTO Side)
Screw (Crankcase Cover)
Flywheel
Key-Flywheel
Piston Assembly (Standard)
Piston Assembly (.020" Oversize)
Ring Set (Standard)
Ring Set (.020" Oversize)
Lock-Piston Pin
Pin-Piston (Standard)
Rod-Connecting (Standard)
Screw (Connecting Rod)
Valve-Exhaust
Valveq ntake
Spring-Valve (Intake)
Spring-Valve (Exhaust)
Keeper-Valve
Tappet-Valve
Camshaft
Short Block
Manifold-Intake
Gasketq ntake
Stud (Carburetor)
Screw (Intake Manifold)
Screw (Intake Manifold)
Screen-Rotating
Screw (Rotating Screen)
Washer (Flywheel)
Plug-Oil
Screw (Throttle Valve)
Kit-Idle Speed
Pin-Float Hinge
Valve-Float Needle
Valve-Choke
Jet-Main (Standard)(Left)
Jet-Main (Standard)(Right)
Jet-Main (High Altitude)(Left)
Jet-Main (High Altitude)(Right)
121
699734
Kit-Carburetor
Overhaul
125
699709
Carburetor
130
690993
Valve-Throttle
131
499805
Kit-Throttle Shaft
133
699724
Float-Carburetor
135
699729
Tube-Fuel Transfer
137
690994
(_$ Gasket-Float Bowl
141
699722
Kit-Choke Shaft
142
699726
O
Nozzle-Carburetor
146
690979
Key-Timing
150
690995
O$
Gasket-Nozzle
160
699727
Retainer-Solenoid
163
691001
,+
Gasket-Air Cleaner
165
693148
Nut (Ring Gear)
187
791766
Line-Fuel (Cut to Required Length)
187A
791744
Line-Fuel (Molded)
188
691108
Screw (Control Bracket)
192
690083
Adjuster-Rocker
Arm
209
697674
Spring-Governor
211
691019
Spring-Governed
Idle
212
695238
Link-Governor
213
691021
Bracket-Choke
Control
216
691022
Link-Choke
219
698231
Gear-Governor
220
690412
Washer (Governor Gear)
222
698761
Bracket-Control
227
792492
Lever-Governor
Control
231
690718
Screw (Choke Valve)
240
691035
Filter-Fuel
250
690957
Retainer-Breather
252
690956
Collector-Oil
265
691024
Clamp-Casing
267
695134
Screw (Casing Clamp)
276
690997
,O$ Washer-Sealing
287
691108
Screw (Dipstick/Tube Assembly)
304
790688
Housing-Blower
305
691005
Screw (Blower Housing)
305A
790690
Screw (Blower Housing)
309
691262
Motor-Starter
310
691263
Screw (Starter Motor)
311
497608
Brush Set
332
691059
Nut (Flywheel)
333
691060
Armature-Magneto
334
691061
Screw (Magneto Armature)
337
691043
Plug-Spark
358
694012
Gasket Set-Engine
363
691062
Puller-Flywheel
383
690966
Wrench-Spark
Plug
o
O
4-
NOTE:
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 in Valve Gasket Set, Key. No. 1095
All component dimensions given in U.S. inches
1 inch = 25.4 mm
49
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