Troy-Bilt Horse Instruction Manual

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
Printed In USA
Il l u s t r a t e d Pa r t s Ma n u a l
Hydrostatic Lawn Tractor — Model Series 790
Form No. 769-05403
(February 8, 2010)

1 & 5 Style Hood
14
5
17
40
16
31
2
13
38
37
36
27
33
8
1
29
34
35
17
39
28
24
25
21
30
19
23
18
22
1
12
10
11
33
4
2
67
15
9
20
28
32
29
32
26
A
A
29
32
4

Ref.
No. Part No. Description
1710-04484 Screw 5/16-18 x .750
2710-04593 Screw 5/16-18 x .375
3710-0751 Hex Screw 1/4-20 x .620
4712-04064 Flanglock Nut 1/4-20
5725-0157 Cable Tie
6925-0963 Miniature lamp 12V socket
7731-04949A Grill Lens
8731-05078C Dash Collar
9731-05522A† Hood cover
10 738-04091A Shoulder Screw .43 x .29
11 783-05327B-0637 Suppport Bracket LH
12 783-05328A-0637 Suppport Bracket RH
13 783-05454-0637 Hood pivot bracket
14 783-05683 Hood - 5 Style
783-05684 Hood - 1 Style
15 783-05685 Grill
16 983-04226 Hydro Control Assembly
17 710-04483 Screw 1/4-20 x .500
18 710-3144 Hex Screw 3/8-16 x 2.00
19 711- 0736 Ferrule Adjust
20 712-04065 Flang lock Nut 3/8-16
21 714-04040 Cotter Pin, Bow Tie
22 936- 0133 Flat Washer .411 x 1.25 x .100
Ref.
No. Part No. Description
23 747-04430 Control Rod, Speed Selector
24 750-04465 Flang Spacer .390 x .671 x 1.095
25 783-04862 Transmission Speed Latch
26 683-04448-0637 Battery Rod
27 710-0599 Hex Screw Washer 1/4-20 x .500
28 710-0604A Screw 5/16-18 x .625
29 710-0895 Hex Screw 1/4-15 x .750
30 712-04063 Flanglock Nut 5/16-18
31 731-04945 Support Shaft
32 783-04584A-0637 Gas Tank Support Bracket
33 783-04892B-0637 Dash, RMC - Powder Black
783-04892B-0691 Dash, RMC - Black Jack
783-04889B-0637 Dash, RMC/Amp Meter/Choke
34 925-04227B Key Switch Module
35 925-1745 Key
36 726-0230 Cable Tie
37 751-0555B Fuel Tank, 1.5 Gallons
38 751-0603A Fuel Cap
39 746-04364 Throttle/Choke Control Cable
40 925-04156† Ammeter Monitor Indicator
—925-04432D Harness, LT-5, RMC,Dual
—725-04479D Harness, LT-5, Mn Amtr., RMC, Kohl
—725-04469† Harness, Jmpr., Amtr.
1 & 5 Style Hood
NOTE: Tractor features vary by model. NOT all parts listed above and pictured on the previous page are standard equipment.
†If Equipped
5

K Style (Troy-Bilt) Hood
15
14
9
6
7
11
12
5
1
1
37
2
38
16
48
4
10
1
30
24
25
22
18
19
21
23
28
33
17
7
27
32
1
28
27
13 41
40
3
20
36
44
46
5
47
43
45 42
26
29
8
31
39
35 34
1
17
A
A
6

Ref.
No. Part No. Description
1710-04484 Screw 5/16-18 x .750
2783-06605-0637† Fuel Tank Mnt. Bracket - LH
3783-06603-0637† Fuel Tank Mnt. Bracket - RH
4710-05108 Screw, 1/4 x .750
5725-0157 Cable Tie
6925-0963 Miniature lamp 12V socket
7731-06095 Grill Lens - LH
731-06096 Grill Lens - RH
8731-05078C Dash Collar Assembly
9731-06194A Hood Scoop
10 738-04091A Shoulder Screw .43 x .29
11 783-05327B-0637 Suppport Bracket LH
12 783-05328A-0637 Suppport Bracket RH
13 683-04448-0637 Battery Rod
14 683-04441 Hood
15 631-04272 Grill
16 983-04226 Hydro Assembly
17 710-04483 Screw 1/4-20 x .500
18 710-3144 Hex Screw 3/8-16 x 2.00
19 711- 0736 Ferrule Adjust
20 712-04065 Flange Lock Nut 3/8-16
21 714-04040 Cotter Pin, Bow Tie
22 936- 0133 Flat Washer .411 x 1.25 x .100
23 747-04430 Control Rod, Speed Selector
747-05276†† Control Rod, Speed
24 750-04465 Flang Spacer .390 x .671 x 1.095
25 783-04862 Transmission Speed Latch
26 746-04364 Throttle/Choke Control Cable
Ref.
No. Part No. Description
27 710-0599† Hex Screw Washer 1/4-20 x .500
28 710-0604A Screw 5/16-18 x .625
29 710-0895 Hex Screw 1/4-15 x .750
30 712-04063 Flange lock Nut 5/16-18
31 731-04945 Support Shaft
32 783-04584A-0637† Gas Tank Support Bracket
33 783-04899B-0637 Dash, RMC/Amp Meter/Choke
34 925-04227B Key Switch Module
35 925-1745A Key
36 726-0230† Cable Tie
37 751-0659D Fuel Tank, 2 Gallons
751-10782 Fuel Tank, 1.36 Gallon, CARB
38 751-0603A Fuel Cap
951-10947 Fuel Cap, CARB
39 925-04156 Ammeter Monitor Indicator
40 735-04081†† Rubber Grommet
41 751-10441†† Rollover Valve
42 936-3008†† Washer, Flat, .344 x .750 x .120
43 951-10589†† Canister, Carbon, 5 Gallon
44 951-10590†† Filter, Vent, Canister
45 951-10610†† Bracket., Adapter, Canister
46 751-10749†† Hose, Fuel, Low Perm., White
47 751-10750†† Hose, Fuel, Low Perm., Yellow
48 731-05265 Choke Plug
—725-04479D Harn., LT-5, Mn Amtr., RMC, Kohl
—725-04469 Harness, Jmpr., Amtr.
—725-04718 Harness, Jmpr., Headlight
K Style (Troy-Bilt) Hood
NOTE: Tractor features vary by model. NOT all parts listed above and pictured on the previous page are standard equipment.
† If Equipped
†† Equipped with CARB Fuel Tank
7

25
10
24
23
21
22 20
5
2
6
4
16
11
12
14
14
17
18
19
7
15
13
13
10
8
3
1
9
26
9
27
8
Seat and Fender

Ref.
No. Part No. Description
1710-04483 Screw, 1/4-20 x .500
2710-04484 Screw, 5/16-18 x .750
3710-0599 Screw Pan Torx Head, 1/4-20 x .500
4731-04591A Cup Holder
5736-0607 Loack Washer, 5/16
6783-04593D Fender
7783-04843-0637 Lift Adjuster Bracket
8783-1489C-0637 Seat Mount Bracket
9710-04482 Hex Flange, 3/8-16 x .875
720-04061† Knob
10 712-04063 Flangelock Nut, 5/16-18
11 732-1184 Extension Spring
12 936-0108 Flat Washer, .510x .750 x .033
13 736-0242 Bell Washer, .340 x .872 x .060
14 938-0296 Shoulder Screw, 5/16-18 x .437 x .268
15 783-0209D Lift Seat Bracket
16 783-04081C-0637 Pivot Seat Manual Adjust Bracket
17 726-04072A Ratchet Clip, .250 x .500
18 735-04047 Foot Pad, LH
19 735-04048 Foot Pad, RH
20 710-0227 Screw, 8-18 x .500
21 726-0279 Insulator Plate
22 925-1303 Outer Seat SPring
23 725-1439 Inner Seat Spring
24 726-0278 Insulator Boss Plate
25 757-04083 Medium Back Seat
757-04088 High Back Seat
757- 04135 Ultra High Back Seat
26 736-0148† Lock Washer
27 738-04012A† Scr., Shldr., .625 x .145 x 3/8-16
NOTE: Tractor features vary by model. NOT all parts listed above and pictured on the previous page are standard equipment.
† If Equipped
9
Seat and Fender

A
A
37
14
38
11
3
15
1
16
8
13
8
22
21 17
610
27
4
18
8
2
11
8
7
20
5
19 29
39
40
23
25
25
26
20
12
30
36
20
36
40
28
31
33
34
29
24
35
928
32
10
Front End Steering

Ref.
No. Part No. Description
1617- 04024 Gear Assembly, Steering
2710-0376 Screw, 5/16-18, 1.00, Gr5
3710-0643 Screw, 5/16-18, 1.00, Gr5, Lock
4710-1309 Screw, Mach, 5/16-18, 0.750
5710-3180 Screw, 5/16-18, 1.75, Gr5
6912-0240 Nut, Jam, 7/16-20, Gr2
7912-0214 Nut, Hex Lock, 3/8-24
8712-04063 Nut, Flange Lock, 5/16-18, Grf
9931-0484A Hub Cap
10 923-0448A Ball Joint, 7/16-20, Lock
11 736-0242 Washer, Bell, .340 x .872 x .060
12 936-0316 Washer, Flat, .78 x 1.59 x .60
13 738-04141 Shoulder Screw, .435 x .3485, 5/16-18
14 738-0919A Steering Shaft, 5/8 Spline x 21.86
15 941-04124 Bearing, Flange, Hex 5/8
16 941-04454 Flange Bearing .375 ID x .5 OD
17 747-04298 Drag Link, Steering
18 948-0389 Cap, 1.25 x .16
19 748-04065-0637 Steering, Block
20 748- 04068 Spacer, .710 ID x .125 OD x .56
21 750-04418 Spacer, .322 ID x .625 OD x .21
22 783-04644 Stabilizer Plate, Gear Segment
23 938- 04007A-0637 Axle Assmbly LH (38” & 42” Deck)
938-04014A-0637 Axle Assembly, LH (46” Deck)
Ref.
No. Part No. Description
24 638-04008P Axle Assmbly RH (38” & 42” Deck)
938-04013 Axle Assembly, RH (46” Deck)
25 719 -04177A† Pivot Bar, Cast
683-0128B-0637 Pivot Bar
26 710-04484 Screw, 5/16-18, 0.750
27 712-04065 Nut, Flange Lock, 3/8-16, GrF
28 714-04039 Pin, Cotter, 5/32, 1.25
29 914-0474 Pin, Cotter, 1/8 x 0.75
30 726-04035 Push Nut 3/4 Dia.
31 783-05326B-0637 Pivot Bar Bracket
32 736-04228A Washer, Flat, .781 x 1.59
33 738-04128 Scr., Shlder, .500 x 2.380, 3/8-16
34 634-04086-0911 Wheel Ass’y, 15 x 6 x 6 - Grey
634-04086-0941 Wheel Ass’y, 15 x 6 x 6 - Yellow
634-04639-0911 Wheel Ass’y, Sq. Shldr., 15 x 6 x 6.5
35 747-04299A Tie Rod
36 731-04693† Push Cap, Cast
726-0341 Push Cap
37 731-04040 Cap, Steering Wheel (Sprig Logo)
731-04681 Cap, Steering Wheel (Troy-Bilt)
731-04039 Cap, Steering Wheel (No Sprig)
38 631-04028 Steering Wheel, Standard Grip
39 731- 04057A† Std. Axle Cap
40 741-0660A† Brg., Flg.
NOTE: Tractor features vary by model. NOT all parts listed above and pictured on the previous page are standard equipment.
† If Equipped
11
Front End Steering

IMPORTANT
FOR a proper working machine,
use Factory Approved Parts.
VBELTS are designed to engage
and disengage safely. A substitute
(non OEM) V-belt can be dangerous
by not disengaging completely.
4
15 47
59
6
14
31
7
54
21
43
9
50
21
29
6
44
46
58
17
36
27 17
38
18
18
18
17
8
13 56
4222
19
20
37
40
11
60
61
48
51
21
57
32
52
38
25
34
21
30
39
41
12
51
28
35
16
2242
56
45
24
26
5
23
2
17
55
1
3
33
49
53
10
12
Transmission