Illustrated Parts Manual Hydrostatic Lawn Tractor — Model Series 790 MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 Printed In USA Form No.
To The Owner Thank you for purchasing an MTD Lawn Tractor. It was carefully engineered to provide excellent performance when properly operated and maintained. All information in this manual is relative to the most recent product information available at the time of printing. Please be aware that this Illustrated Part’s Manual may cover a range of product specifications for various models. Components listed and/or illustrated in this manual may not be applicable to all models.
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5 Style Hood 48 9 17 2 7 3 1 1 5 51 8 50 44 49 20 36 6 29 24 26 23 41 43 25 27 14 16 18 37 46 47 35 21 19 14 13 39 38 31 45 15 32 40 A 42 21 33 30 28 22 10 4 12 34 4 11 A
Style Hood Ref. No. Part No. Description Ref. No. Part No. Description 1 710-04593 Screw, 5/16-18 x .375 27 783-06811 Dash, Lower 2 710-0751 Hex Screw, 1/4-20 x .620 28 750-04465B Flange Spacer, .390 x .671 x 1.095 3 712-04064 Flangelock Nut, 1/4-20 29 746-04367 Throttle/Choke Cable 4 710-04484 Screw, 5/16-18 x .
K Style (Troy-Bilt) Hood 9 14 3 4 15 56 2 6 39 7 34 35 48 16 31 27 29 8 26 19 30 50 52 B 54 40 38 37 41 37 55 28 33 42 45 20 27 A B 22 44 16 A 24 32 1 36 23 25 18 38 41 40 53 51 6 13 21 17 49 7 1 10 12 11 5 46 47 43
K Style (Troy-Bilt) Hood Ref. No. Part No. Description Ref. No. Part No. Description 1 710-04484 Screw 5/16-18 x .750 31 783-06785A Bracket, Steering Support 2 710-05281 Screw, #12-16 x 1.25 32 783-07083† Gas Tank Support Bracket 3 731-06404 K-Style Bumper 33 783-06811 Dash, Lower NWNDW 4 710-05108 Screw, 1/4 x .
Seat and Fender 25 2 5 10 23 22 20 21 16 24 14 9 26 27 11 14 9 4 13 15 6 12 18 17 1 13 8 10 3 7 8 19
Seat and Fender Ref. No. Part No. Description 1 710-05070 Screw, 1/4-20 x .500 2 710-04484 Screw, 5/16-18 x .750 3 710-0599 Screw Pan Torx Head, 1/4-20 x .500 4 731-04591A Cup Holder 5 736-0607 Loack Washer, 5/16 6 783-04593E Fender 7 783-04843 Lift Adjuster Bracket 8 783-1489D Seat Mount Bracket 9 710-04482 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 .
Front End Steering 35 3 11 36 14 27 13 22 8 15 A 1 6 17 5 30 12 20 10 2 18 19 8 20 21 29 4 8 A 25 20 27 7 26 23 28 29 33 24 34 31 16 32 9 10 28
Front End Steering Ref. No. Part No. Description Ref. No. Part No. Description 1 617-04094 Front Steering Gear Assembly 22 738-04162A Shoulder Spacer, .884 x .190 2 710-0514 Hex Screw, 3/8-16 x 1.00 23 938-04007A Axle Assmbly LH (38” & 42” Deck) 3 710-0643 Screw, 5/16-18, 1.00, Gr5, Lock 938-04014A Axle Assembly, LH (46” Deck) 4 710-1309 Screw, Mach, 5/16-18, 0.750 638-04008P Axle Assmbly RH (38” & 42” Deck) 5 710-3180 Screw, 5/16-18, 1.
Transmission 23 5 26 24 IMPORTANT 45 70 17 36 22 42 29 FOR a proper working machine, use Factory Approved Parts. 22 42 2 73 56 13 56 68 69 63 58 65 6462 71 66 17 8 V-BELTS are designed to engage and disengage safely. A substitute (non OEM) V-belt can be dangerous by not disengaging completely.
Transmission Ref. No. 1 Part No. Description Ref. No. Part No. Description 918-04892A Hydro Transmission 40 738-04430 Shldr Spacer, 1.375 ID X .380 x 1.54 918-04925B Hydro Transmission, 18” Tires 41 736-0430 Flat Washer, .350 x 1.59 x .062 2 647-04200A Hydro Handle Control Assembly 42 941-0225 Hex Flange Bearing 3 647-04261 Hydro Pedal Assembly 43 747-05603 Declutching Rod 4 710-1266 Hex Screw, 5/16-18 x 3.5 44 747-05242 Brake Rod 5 710-0227 Screw, #8-18:0.
51 52 Frame and PTO Lift 53 18 46 24 27 B 18 1 30 34 35 19 22 33 41 31 2 10 11 8 B 17 36 16 33 20 9 5 49 17 28 42 12 8 2 46” Deck Lift 39 4 21 C 3 B 33 3 11 2 45 50 14 39 50 47 3 39 2 14 14 43 38 37 32 33 1 11 29 20 20 25 22 44 26 15 25 22 23 A 13 C 49 A 3 11 A 26 40 6 7 48 18
Frame and PTO Lift Ref. No. 1 Part No. Description Ref. No. Part No. Description 683-04155A Shaft Assembly Lift 42” Deck 28 783-04637 Bracket, Runing Board 683-04334 Shaft Assembly Lift 46” Deck 29 783-04753 Frame Support Bracket 2 712-04065 Nut, Flange Lock, 3/8-16, GrF 30 783-04869A Bracket, Battery 3 714-04040 Pin, Cotter, Bow Tie 31 647-04096A Handle Assembly, PTO 4 783-05389A Frame Brace Bracket 32 710-04608 Screw, 7/16-20, 3.25 42” Deck 5 716-0106A Ring, E-Type, .
42” Deck 1 17 11 50 40 9 16 3 52 7 36 32 8 23 29 37 25 12 53 1 4 35 30 46 44 9 6 28 24 2 10 16 22 27 8 5 34 16 6 47 14 20 13 41 16 38 43 15 12 56 39 17 21 51 16 31 19 26 49 45 33 54 54 32 33 28 9 48 48 42 55 16 18
42” Deck Ref. Part Number Description Ref. Part Number Description 1. 918-04822A Spindle Ass’y, Pulley, 6.3 Dia 29. 936-0344 Washer, Flat, .385 X 1.0 X .030 2. 683-0254B Bracket Ass’y, Deck, Hanger LH 30. 736-0187 Washer, flat, .64 X 1.24 X .06 3. 983-04511 Brake Ass’y, Deck, 42/46 31. 736-0225 Washer, Lock, 5/8, Int Tooth 4. 983-04525 Brake Ass’y, Deck, 46” 32. 736-0262 Washer, Flat, .385 x .870 x .092 5. 983-04572 Deck Ass’y, Offset, 42 W/ 2 wheel 33. 750-04936 Spacer, .
46” Deck 19 1 56 61 19 48 12 11 36 7 56 41 10 38 30 62 52 15 45 11 4 59 36 7 29 54 8 51 6 37 33 13 19 17 8 18 55 16 18 43 19 57 35 22 23 19 19 32 44 20 63 58 18 53 50 42 39 25 49 3 66 54 26 40 24 64 65 34 10 2 46 14 1 61 60 28 66 65 27 5 9 41 20 31 47 21
46” Deck Ref. Part Number Description Ref. Part Number Description 1. 918-04865A Spindle Assembly, Pul 6.93 Dia 34. 936-0119 Washer, Lock, 5/16, Regular Duty 2. 683-0254B Bracket Assembly, Deck Hanger, LH 35. 736-0225 Washer, Lock, 5/8, Int Tooth 3. 631-04288 Chute Deflector Assembly 36. 736-0262 Washer, Flat, .385 x .870 x .092 4. 983-04511 Brake Assembly, Deck, 42/46 37. 738-04091A Shoulder Spacer, .43 x .29, 5/16-18 5. 983-04525 Brake Assembly, Deck, 46" 38.
Briggs & Stratton Model 28 6 9 10 8 7 4 3 13 5 4 11 12 2 1 Ref. No. Part No. Description 1 683-04549 Muffler Shield Assembly with Weld 2 710-0227 Screw, 8-18 x .500 3 710-04683 Screw, 3/8-16 x 1.0 4 710-0642 Screw, 1/4-20 x .750 5 710-1314A Socket Screw, 5/16-18 x .750 6 712-0271 Sems Nut, 1/4-20 7 BS-692236 Exhaust Gasket, 10 HP Briggs 8 725-0157 Cable Tie 9 726-0205 Clamp Hose, .
Kohler Courage 9 8 10 12 6 2 13 3 4 11 2 5 7 1 Ref. No. Part No. Description 1 683-04549 Muffler Shield Assembly with Weld 2 710-0227 Screw, 8-18 x .500 3 710-04683 Screw, 3/8-16 x 1.0 4 710-0599 Screw, 1/4-20 x .500 5 710-0642 Screw, 1/4-20 x .750 6 710-1314A Socket Screw, 5/16-18 x .750 7 725-0157 Cable Tie 8 726-0205 Clamp Hose, .
Wiring Harness Schematic - 725-04432G 22
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To order replacement parts or locate your nearest service dealer call a Customer Support at (800) 800-7310. or visit www.mtdproducts.com to find the nearest authorized dealer in your area. MTD LLC, P.O.