Illustrated Parts Manual
Transmatic Lawn Tractor — TB42 7-speed
TROY-BILT LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
Form No. 769-10459
(December 08, 2014)
Printed In USA
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K Style Hood
14
3
4
15
2
6
47
7
7
1
1
1
34
35
17
39
41
38
42
13
21
31
27
40
29
16
8
37
26
19
46
44
30
28
32
9
20
36
43
33
B
A
5
45
B
23
25
16
A
11
27
10
24
1
12
18
22
4
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K Style Hood
Ref.
No.
Ref.
No.
Part No.
Description
Part No.
Description
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
—
783-06991
Transmission Speed Latch
Throttle/Choke Control Cable
Tap Screw, 1/4-20, 0.625
Screw 5/16-18 x .625
Bearing, .628 ID x 1.36
Flange lock Nut 5/16-18
Bracket, Steering Support
Gas Tank Support Bracket
Dash, Lower NWNDW
Key Switch Module
Key, Assembly
1
2
3
4
5
6
7
710-04484
Screw 5/16-18 x .750
Screw, #12-16 x 1.25
K-Style Bumper
746-04367
710-1652
710-05281
731-06404
710-05108
725-0157
710-0604A
741-0587
Screw, 1/4 x .750
Cable Tie
712-04063
783-06785C
783-07083
783- 06811D
925-04659
625-05002
726-0230
925-0963
Miniature lamp 12V socket
Grill Lens - LH
731-06095
731-06096
910-0224
Grill Lens - RH
8
Screw, #10-16 x .500
Lock Washer, 1/4
Shoulder Screw .43 x .29
Suppport Bracket LH
Suppport Bracket RH
Battery Rod
9
736-3006
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
738-04091A
783-05327B
783-05328A
683-04448
683-04441A
631-04272
710-05070A
710-04483
710-3144
Cable Tie
951-04304
951-12179B
751-12089-28
735-04081
751-12118
Fuel Tank, 1.36 Gallon
Fuel Cap
Hose Vent, 3/16
Hood
Rubber Grommet
Grill
Rollover Valve
Screw, 1/4-20 x .500
Screw 1/4-20 x .500
Hex Screw 3/8-16 x 2.00
Hex Screw, 5/16-18 x .625
Flange Lock Nut 3/8-16
Dash, Upper
731-05265
710-0778
Choke Plug
Hex Washer Screw, 1/4-20 x 1.50
Shift Lever
731-07885B
731-07895A
732-04877
931-09328
925-04567H
710-3025
Index Control
712-04065
931-08054A
783-06823
747-05398
750-04465C
Compr. Spring, .72 OD x .78
Plenum
Speed Latch Tab
Speed Control Rod
Flange Spacer .39 x .671 x 1.095
Harness, LT-5, NRMC,Dual
5
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Frame and PTO Lift
39
18
19
17
4
10
13
B
22
32
4
27
24
16
26
33
A
5
23
15
46
45
43
8
37
5
30
31
21
48
28
12
C
34
B
A
36
3
2
12
1
6
47
29
9
5
11
8
25
6
3
7
14
11
8
20
C
42
28
33
24
38
35
15
23
41
40
4
44
6
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Frame and PTO Lift
Ref.
No.
Ref.
No.
Part No.
Description
Part No.
Description
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
716-0106A
720-0298
E Ring
1
683-04195
Support Bracket
Handle Grip, 5/8
2
683-05139
710-0703
Frame Assembly
732-04438
938-0380
Torsion Spring
3
Screw Carriage, 1/4-20 x .75
Screw 5/16-18 x .750
Shoulder Bolt, 3/8-16 x .50 x .270
Hex Flange Bearing
Deck Lift Handle
4
710-04484
710-0599
941-0225
5
Screw, 1/4-20 x .500
747-04653A
747-06237A
747-06253
783-0678C
725-04363
736-0322
6
710-3008
Hex Screw, 5/16-18 x .75
Flangelock Nut, 5/16-18
Flangelock Nut, 1/4-20
Screw Mount Interlock Switch
Compression Spacer, 1.314 x 2.55
Flat Washer, .28 x .74 x .063
Shoulder Spacer, 10-32 x .500
Seat Frame Bracket
Lift Rod, RH
7
712-04063
712-04064
925-04039
732-0735A
736-0173
Lift Rod, LH
8
Lift Arm
9
Switch Interlock
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Flat Washer, .450 x 1.250 x .164
PTO Bearing
741-04119A
946-05124A
756-04196A
683-04448
936-0300
738-04237A
783-04548D
783-04637
936-0140
Deck Engage Cable
Engine Pulley, 3.39 x 6.12
Battery Hold Down Rod
Flat Washer, .406 x .875 x .059
42" Belt Keeper
Running Board Bracket
Flat Washer, .385 x .62 x .063
Battery Bracket
783-04869A
710-04666
712-0271
747-04857
710-0604A
725-06153
710-3157A
914-0145
Hex Head Flange, 1/4-20 x .75
Sems Nut, 1/4-20
Screw, 5/16-18.0 x .625
12V Solenoid
925-1707D
783-04536B
647-05041
683-04334
712-04065
714-04040
230 CCA Battery
Hex Screw, 7/16-20 x 3.25
Click Pin, .092 x 1.64
Handle Grip, 3/8
Support Bracket
PTO Handle Assembly
Lift Assembly
720-04049A
732-04276A
738-04425
PTO Spring Extension
Shoulder Bolt, 1/4-28 x .342 x .335
Flangelock Nut, 3/8-16
Bow-tie Cotter Pin
7
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Front End Steering
21
3
11
29
33
32
31
30
14
27
13
22
8
15
37
6
10
41
1
17
5
40
2
18
19
20
28
26
4
8
8
39
24
27
7
12
25
38
28
39
9
34
29
36
35
23
25
16
8
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Front End Steering
Ref.
1
Part Number
617-04094
710-0514
Description
Front Steering Gear Assembly
Hex Screw, 3/8-16 x 1.00
Hex Screw, 5/16-18 x 1.00, Lock
Machine Screw, 5/16-18 x .750
Hex Screw, 5/16-18 x 1.75
Jam Nut, 7/16-20
2
3
710-0643
4
710-1309
5
710-3180
6
912-0240
7
912-0214
Jamlock Nut, 3/8-24
Flangelock Nut, 5/16-18
Front RH Axle
8
712-04063
938-04013
923-0448A
736-0242
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Ball Joint, 7/16-20
Bell Washer, .340 x .872 x .060
Front LH Axle
938-04014A
738-04141
938-05078
941-04124
931-0484A
747-05385A
948-0389
Shoulder Bolt, 5/16-18 x .435 x .350
Steering Shaft, 5/8
Flange Bearing, 5/8
Hub Cap
Steering Link
Cap, 1.25 x .16
748-04278
748-04068
731-04681
783-08577
736-04228A
683-0128B
714-0162
Steering Block
Spacer, .71 x .125 x .56
Cap, Troy-Bilt
Stabilizer Plate
Flat Washer, .781 x 1.590
Pivot Axle
Cotter Pin, 5/32 x 1.25
Screw, 5/16-18 x .750
Flangelock Nut, 3/8-16
Cotter Pin, .125 x .75
Wheel Assembly
710-04484
912-0431
914-0474
634-05053-0911
631-04028
634-05066
934-0255
Steering Wheel
Rim Asm, 6.0 x 4.5
Valve, tubeless Air
734-04240A-0901
738-04128
747-04299A
783-05326B
726-0341
Tire, 15 X 6 X 6 Rd Shldr
Shoulder Bolt, 3/8-16 x .500 x 2.38
Fixed Rod
Pivot Bar Bracket
Push Cap, 3/4
731-04057A
741-0660A
750-06192A
736-0331
Standard Axle Cap
Flange Bearing, .760 x .941 x 1.0
Spacer, .38 ID x .854 OD x .20
Bell Washer, .390 x 1.13 x .062
9
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Seat and Fender
16
2
24
22
17
26
9
23
25
13
15
4
10
13
12
14
18
6
11
19
21
1
12
8
5
9
3
20
7
10
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Seat and Fender
Ref.
No.
Part No.
Description
1
710-05070A
710-04484
710-0599
Screw, 1/4-20 x .500
2
Screw, 5/16-18 x .750
Screw Pan Torx Head, 1/4-20 x .500
Cup Holder
3
4
731-04591A
710-0134
5
Screw Carriage, 1/4-20 x .62
Fender - Red
6
783-04587D
783-04843
783-1489D
712-04063
732-1184
7
Lift Adjuster Bracket - Powder Black
Seat Mount Bracket - Powder Black
Flangelock Nut, 5/16-18
Extension Spring
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
936-0108
Flat Washer, .510x .750 x .033
Bell Washer, .340 x .872 x .060
Shoulder Screw, 5/16-18 x .437 x .268
Lift Seat Bracket
736-0242
938-0296
783-0209D
783-04081D
757-04083A
725-1439
Pivot Seat Manual Adjust Bracket
Med. Back Seat, Black
Inner Seat Spring
720-04061
735-04047
735-04048
726-3046
710-0227
Knob, 3/8-16 x .875
Foot Pad, LH
Foot Pad, RH
Ratchet Clip, .250 x .500
Screw, 8-18 x .500
726-0279
Insulator Plate
925-1308A
726-0278
Outer Seat SPring
Insulator Boss Plate
736-0607
Loack Washer, 5/16
11
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Transmission
17
3
20
25
27
10
40
4
29
60
12
59
21
24
12
58
7
57
39
19
A
2
5
18
13
38
35
32
6
55
34
8
36
41
56
16
46
28
46
47
33
43
61
52
44
42
37
A
45
48
B
47
44
53
1
22
54
54
51
50
14
49
26
49
31
23
B
9
15
11
55
30
12
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Transmission
Ref.
1
Part Number
918-04566A
647-04034C
647-04266
710-0227
Description
Transmission Drive Assembly
Pedal Assembly
Ref.
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
Part Number
747-04969
934-0255
Description
Belt Keeper Rod
Valve, tubeless Air
2
750-0566A
750-0802
Spacer, .260 x .375 x 1.030 LG
Spacer, .640 ID x .76 OD x 2.63
V Belt, 5L 35.25 POLY
V Belt, 5L 70.90 POLY
V Pulley 7.25 DIA SPUN
Pedal Support Bracket
Shaft Adjust Bracket
Variable Speed Pulley Assembly
Transmission Bracket Assembly
Idler Bracket Assembly
Hex Screw, 3/8-16 x 1.75
Screw, 5/16-18 x 0.750
Flangelock Nut, 3/8-16
Shoulder Spacer, .625 ID x .169
Bracket Assembly
3
Shaft Lever Assembly
Screw, 8-18:0.500
4
954-05040
954-04249A
956-04002
783-04536B
783-04595A
956-04015A
683-04176A
753-05147
710-0347
5
710-04484
710-0599
Screw, 5/16-18 x .750
Screw, 1/4-20 x 0.500
Screw, 5/16-18 x 0.625
Screw, 1/4-20 x 1.250
Hex Screw, 5/16-18 x 3.50
Hex Screw, 5/16-18 x .75
Ferrule, 3/8-24 X .375 DIA.
Flangelock Nut, 5/16-18
Flange Nut, 9/16-18
Cotter Pin INT- .125 DIA
Bow-Tie Cotter Pin, 72
Pulley Hub, 5/8 SPLINE
Shift Knob
6
7
710-0604A
710-0809
710-1266
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
710-3008
711- 06103
712-04063
712-0700
710-1260A
712-04065
938-0347
914-0209
714-04040
718-04407
720-04028
725-0157
753-05147
710-05339
710-0778
Screw, 5/16-24 x .750
Screw, 1/4-20 x 1.500
Bearing Cup
Cable Tie
725-1644
Short Spring Switch
Push Cap, 5/8
718-04261
732-04746
948-0334
726-0214
Extension Spring, .94 OD x 6.75 LG
Spacer
926-0320
Plate Insulator Nut
731-04602
731-04604
732-04306
732-04488
732-0716D
735-0239
Sleeve, .758 x .821 x 3.3125
Sleeve, .758 x .821 x 2.4375
Spring Extension, .80 OD x 3.28 LG
Spring Extension, .38 OD x 3.25 LG
Spring Extension, .59 OD x 4.00 LG
Foot Pad, 4.0 LONG
941-0600
Ball Bearing, 17 x 40 x 12
Wheel, 20 x 8 x 8
634-04324-0911
734-04241-0901
725-04363
17962
Tire, 20 X 8 X 8 Rd Shldr
Switch Interlock
Plate Switch
738-04237A
731-06894
634-04369-0662
Shoulder Screw, #10-32 x .500
Shift Plate Bearing
756-04325
747-05243
747-05186
747-05188
Idler Pulley
Shift Rod
Rim, 8.0 x 7.0 x .750
Variable Speed Control Rod
Brake Rod
13
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42” Deck
19
48
1
49
43
11
47
35
14
37
18
42
42
40
40
48
47
29
41
7
25
15
31
38
46
32
3
26
4
44
24
13
5
14
56
10
11
16
27
11
2
22
6
55
23
17
1
54
39
21
28
9
45
8
53
34
52
36
20
50
51
33
57
19
58
18
17
30
12
14
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42” Deck
Ref. Part Number
Description
Ref. Part Number
Description
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
631-04354A
738-05082
738-05088
942-04308
747-05141A
747-06538
748-04069
748-05029A
748-05037A
954-04060C
756-05034
750-0566A
783-08389
783-08510
783-08654B
710-0751
Chute Deflector Assembly
Shoulder Spacer, .970 x .190
Shoulder Spacer, .75 x .145
Blade, Cut, 21.23” 2-In-1, Econ
Rod, Lift, Deck, Frt, 12.7
Brake Rod
1.
918-06991
683-0254B
783-08690
983-05183
983-05182
983-05184
710-0347
710-0376
Spindle Ass’y, Pulley, 6.2 Dia
Bracket Ass’y, Deck, Hanger LH
Belt Keeper
2.
3.
4.
Brake Assembly, Deck, LH
Brake Assembly, Deck, RH
Deck Assembly, 42”
5.
6.
Deck Lift Pivot Cup
7.
Hex Screw, 3/8-16 x 1.75
Hex Cap Screw, 5/16-18 x 1.00
Screw, Self-tapping, 5/16-18, .750
Hex Screw, 5/16-18, 1.25, Gr5, Std
Screw, Self-tapping, 1/4-20, 0.500
Screw, 5/16-18 x 0.750
Shoulder Spacer, Idler
Shoulder Spacer, Pivot Idler
Belt, V Type, A Sec X 96.5
Pulley, Idler, 4.50”Dia
Spacer, .260 x .375 x 1.030
Pulley Cap
8.
9.
710-04484
710-0528
710-0599
710-1260A
710-06133
710-3096
710-06213
783-06464
712-04063
712-04065
712-0417A
712-04243
714-04043
917-04074
720-05010
750-06184
732-04629
732-05151A
936 - 0119
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
Screw, M6-1 x .625
Deck Belt Cover, 42
Hex Screw, 3/8-16, 2.00, Gr8, Std
Hex cap Screw, 5/16-18 x 1.25
Deck Wash Plug
Deck Idler Bracket
Hex Cap Screw, 1/4-20 x .62
Shift, Spindle, 6.11.
738-1186A
941-0919B
750-04936
756-05031
712-04064
726-04009
732-05261
747-06290B
734-04155
938-3056
Nut, Flange Lock, 5/16-18, Grf
Nut, Flange Lock, 3/8-16, Grf
Nut, Flange, 5/8-18
Bearing, Ball, .787id x 1.85 Odx.551
Spacer, .792 x 1.060 x 1.860
Pulley, Deck, 5.4 Dia
Flange Lock Nut, 1/2-13
Bow-Tie Cotter Pin
Nut, Flange Lock, 1/4-20, Nylon
Push Cap
Gear, Deck, Adjustment
Cap, .290 x .500
Spring, Torsion, .440 ID x 1.75
Hinge Pin
Spacer, .385 x 1.75 x .585
Extension Spring, .750 X 4.77
Torsion Spring, LH
Wheel, Deck, 5.0 Dia Ball
Bolt, Shoulder, .496 x 2.50, 3/8-16
Shoulder Screw, 1/4-20
Bracket, Chute, 42”
738-04184A
783-08504A
936-3039
Washer, Lock, 5/16, Regular Duty
Flat Washer, .406 x .875 x .059
Screw, Self Tapping, 1/4-20, 1.50
936-0300
710-0778
Flat Washer, .406 x 1.50 x .105
15
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MTD P90
11
6
8
9
7
13
12
10
4
3
15
14
1
2
5
17
16
Ref. Part Number
Description
1
683-04549A
710-0227
Muffler Shield Assembly with Weld
Screw, 8-18 x .500
Screw, 3/8-16 x 1.0
Screw, 1/4-20 x .500
Screw, 1/4-20 x .750
Nut, M6-1, Hexlock
Flange Nut, M8-1.25
Cable Tie
2
3
710-04683C
710-0599
4
5
710-0642
6
912-0691
7
712-3086
8
725-0157
9
726-0205
Clamp Hose, .490 diameter
Oil Drain Sleeve
10
11
12
13
14
15
16
17
731-05628
783-08122
751-10349-16
751-11053A
751-14527
BS-298090S
710-05070A
747-06404A
Deflector Bracket
Fuel Hose, Low Permeation
Muffler Deflector Long
Muffler
Fuel Filter
Pan Torx Screw 1/4
Muffler Guard Rod
16
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Wiring Harness Schematic - 725-04567H
17
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Engine Model 4P90HUA Air Intake
120
122
121
121
125
123
126
127
126
128
Ref. Part Number
Description
120 951-14458
Air Filter Cover Assembly
Air Filter Lock Nut
Air Filter Cover
Sponge Filter
121
951-14466
122 951-12255
123 951-12256
125 951-12260
126 712-04212
127 951-12328
128 951-12257A
Air Filter Assembly
Nut M6
Rubber Cap
Manifold
18
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4P90HUA Carburetor Assembly
133
133
132
131
136
138
131
I
F
J
K
L
135
B
K
C
138
M
O
E
137
Q
R
N
S
130
P
129
130
T
U
V
W
X
Y
Z
BB
Ref.
Ref.
Part Number
Description
Part Number
Description
M
N
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Nylon/Plastic O-Ring
129
130
131
132
133
135
136
137
138
951-12258A
951-05149
951-11731
951-11336
723-04071
951-12261
951-12262
951-12263
951-12264
951-14708
n/a
Manifold Gasket
Carburetor Assembly
Fuel Hose Clamp
Fuel Line Kit
Fiber O-Ring
O
Idle Speed Adjusting Screw
Idle Mixture Screw
Carburetor Body
Fuel Inlet
P
Q
Plastic Support Clamp
Carburetor Gasket
Carburetor Insulator
Carburetor Insulator Gasket
Carb Stud
R
S
Float Pin
T
Emulsion Tube
Needle Valve
U
V
Main Jet
Carburetor Kit - Major
Choke Shaft
W
X
Needle Valve Spring
Float
A
B
C
D
E
F
G
H
I
n/a
Choke Shaft Fiber O-Ring
Choke Return Spring
Flat Steel Washer
Choke Plate
Y
Fuel Bowl O-Ring
Ring
n/a
Z
n/a
AA
BB
CC
DD
EE
FF
GG
Fuel Bowl
n/a
Solenoid Valve Assembly
Solenoid Valve Washer
Fuel Drain Plug Gasket
Fuel Drain Plug
Ring
n/a
Idle Jet Assembly
Idle Jet O-Ring
n/a
n/a
Sheetmetal Housing
Throttle Shaft
n/a
J
n/a
Throttle Plate
Seat/Fuel Bowl Bolt
K
L
n/a
Screw M3×5
19
n/a
Lock Washer
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4P90HUA Crankcase
48
49
50
52
51
53
47
181
72
175
177
72
73
57
70
74
178
176
55
175
56
59
54
58
62
63
68
170
60
66
64
65
69
67
20
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5P65M0B Crankcase
Ref.
Ref.
Part Number
Description
Part Number
Description
64
712-04212
932-05187
710-04979
710-05310
951-14457
750-05530
951-12235
951-12236
919-05022A
951-12237
951-05156
951-11953
951-14677
951-11954
951-12277
710-05319
Governor Arm Nut M6
Governor Spring
47
48
49
50
51
52
53
54
55
56
57
58
59
60
62
63
951-11499
710-04916
951-14456
951-12226
951-12685
951-12227
951-12686
951-12228
947-06356
736-04558
714-04074
951-11574
951-12230
951-12231
951-12232
710-04908
Upper Crankshaft Seal
Bolt M6×14
65
66
Bolt M6×18
Breather Cover Plate
Breather Gasket
Umbrella Valve
67
Bolt M6×38
68
Component Bracket/Separate
Component Bracket Spacer
Breather Hose Assembly
Breather Hose Clamp
Crankcase
69
Mesh Screen
70
Umbrella Valve Seat
Choke Linkage
72
73
Governor Arm Shaft
Governor Washer
Governor Cotter Pin
Governor Seal
74
Crankcase Cover Gasket
Piston Ring Set
170
175
176
177
178
181
Piston Pin Snap Ring
Piston
Throttle Linkage
Throttle Linkage Spring
Governor Arm
Piston Pin
Connecting Rod Assembly
Connecting Rod Bolt
Governor Arm Bolt
21
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4P90HUA Starter Assembly
9
8
10
11
12
11
12
11
12
24
25
22
13
24
25
37
14
36
34
35
33
32
15
16
17
37
35
36
34
31
18
26
19
29
20
21
30
30
Ref. Part Number
Description
Ref. Part Number
Description
22
24
25
26
29
30
31
32
33
34
35
36
37
951-12528
951-12217
736-04554
951-12529
951-12219
710-05308
710-05309
951-12324
736-04555
736-04556
736-04477
712-04212
715-04120
Starter Housing Assembly
Screw
8
710-05306
951-12207
710-05307
736-04554
736-04556
951-12208
951-12211
951-12210
951-12312
951-12209
951-12212
951-12214
951-12215
951-12216
Bolt M8×40
9
Starter Assembly
Screw M5×25
Lock Washer 5
Plain Washer 6
Lock Washer
10
11
12
13
14
15
16
17
18
19
20
21
Brush Assembly
Electrical Starter Back Cover
Bolt M6×100
Electrical Starter Front Cover
Bearing
Bolt M6×30 Assembly
Waterproof Washer
Insulation Washer
Plain Washer 6
Pinion/Clutch Assembly
Gear
Bearing
Lock Washer 6
Pinion Cover
Bearing 6001Zz
Starter Armature
Bearing
Nut M6
Dowel Pin 10×14
22
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4P90HUA Engine Shroud
182
182
2
3
1
2
3
4
2
4
3
4
5
6
7
6
Ref.
Part Number
Description
1
951-12205
712-04290
750-05320
951-14454
951-11622
710-05305
951-14455
710-05303
Debris Shield
Nut
2
3
Engine Shroud Spacer
4
Starter / Shroud Stud M6×99
Flexible Clamp
5
6
Hook Bolt
7
Air Shield
182
Self-Tapping Bolt 5.5×25
23
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4P90HUA Crankshaft & Crankcase Cover
76
75
79
80
77
91
92
83
5
93
90
82
81
98
104
86
89
88
87
99
103
102
86
84
101
100
85
112
113
115
116
117
114
118
119
117
117
24
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4P90HUA Crankshaft & Crankcase Cover
Ref.
Ref.
Part Number
Description
Part Number
Description
92
93
98
99
751-12246
736-04559
951-12248
951-12247
Balanceable Shaft Assembly
Balanceable Thrust Washer
Oil Pump Assembly
O-Ring 10×2.65
Filter
5
951-11622
951-12238
951-11969
951-10307
951-12239
951-12241
951-12363
951-12240
710-04980
951-11644
951-12242
715-04121
951-12243
951-12244
710-05312
736-04557
951-12245
Flexible Clamp
75
76
77
79
80
81
82
83
84
85
86
87
88
89
90
91
Crankshaft Assembly
Main Bearing
Woodruff Key
Dipstick Assembly
Upper O-Ring
Lower O-Ring
Oil Fill Tube Assembly
Bolt M6×35
100 951-12249
101
102
103
951-12250
951-12251
951-12252
Filter Spring
O-Ring 35.5×2.65
Filter Cover
104 951-11956
Governor Gear/Shaft Assembly
Bolt M8×15
112
113
114
115
116
117
118
119
710-05313
736-04560
951-12690
951-12253
919-05090
710-04982
951-11375
710-05314
Oil Drain Plug
Regulator
Oil Drain Plug Washer
Oil Filter
Dowel Pin 8×14
Ball 6.35
Screw Joint
Crankcase Cover
Bolt M8×54
Spring
Bolt
Lower Crankshaft Seal
Bolt M8×43
Crankshaft Thrust Washer
Balanceable Shaft Bearing
25
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4P90HUA Cylinder Head
169
168
165
167
166
164
156
153
154
167
152
151
159
166
160
158
157
161
150
150
165
162
155
154
152
147
148
146
145
149
145
148
146
147
142
144
163
162
143
161
141
139
141
139
141
141
139
140
139
26
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4P90HUA Cylinder Head
Ref.
Ref.
Part Number
Description
Part Number
Description
155
156
157
158
159
159
951-11337
951-11337
712-04219
951-12271
951-14459
951-14464
Valve Kit
139
710-05315
Bolt M5×10
Valve Kit
140 951-12265
Cowl
Nut M8
141
142
143
710-05316
951-12266
951-12267
Valve Cover Bolt
Valve Cover
Exhaust Pipe Gasket
Muff Stud M8×47
Muffler Stud Assembly
Spark Plug/F6Rtc
Bolt M10×1.25×85
Bolt /M10×1.25×65
Cylinder Head
Valve Cover Ring
Rocker Arm Assembly
Jam Nut
144 951-11981
145 751-11124
146 751-11123
147 951-11966
148 710-04962
160 951-10292
161
162
163
710-05317
710-05318
951-14706
Fulcrum Nut
Rocker Arm
Rocker Arm Stud
Push Rod Guide
Exhaust Valve Adjuster
Exhaust Valve Spring Retainer
Valve Spring
164 951-12273
165 715-04122
166 951-11335
167 951-11962
168 736-04561
169 951-12274
Cylinder Head Gasket
Cylinder Head Dowel 12×16
Push Rod Kit
149
150
151
152
153
154
951-12268
951-12269
951-12080
951-12078
951-11964
951-12077
Tappet
Camshaft Thrust Washer
Camshaft Assembly
Intake Valve Seal
Valve Spring Retainer
27
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4P90HUA Ignition & Electrical
40
41
42
43
38
38
38
44
45
39
46
Ref. Part Number
Description
38
39
40
41
42
43
44
45
46
710-04931
951-12220
712-04220
951-12221
951-12222A
919-05089
951-12224
710-04940
951-12279
Bolt M6×28
Ignition Coil Assembly
Flywheel Nut M16×1.5
Plate
Cooling Fan
Flywheel
Coil Assy. Charge
Bolt M6×10
Cowl
28
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Notes
29
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30
Notes
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Notes
31
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To order replacement parts or locate your nearest service dealer call a Customer Support at (800) 800-7310.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
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