Illustrated Parts Manual Transmatic Lawn Tractor — Model Series 780 MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 Printed In USA Form No.
To The Owner Thank You Thank you for purchasing this 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.
Notes 3
K Style Hood 3 1 2 5 17 7 8 9 46 47 31 44 32 20 36 29 24 23 51 53 49 26 25 14 15 32 A 21 55 30 28 22 10 4 12 56 4 11 A 38 4 40 50 52 35 41 42 33 27 16 18 54 37 21 19 14 34 31 6 13 48 43 45 39
K Style Hood Ref. No. Part No. Description Ref. No. Part No. Description 1 631-04272 Grill Assembly, Troy-Bilt 30 783-04903A Speed Latch - No RMC 2 731-06404 K-Style Bumper 31 683-04448 Battery Assembly Rod 3 683-04441 Hood Assembly 32 726-0230 Cable Tie 4 710-04484 Screw, 5/16-18 x .750 33 751-0555B 1.5 Gallon Fuel Tank 5 710-0895 Screw, 1/4-15 x .750 34 751-0603A Fuel Cap 6 725-0157 Cable Tie 35 951-04304 1.
5 Style Hood 30 31 19 22 21 20 1 18 18 9 23 29 6 36 35 42 41 36 39 39 17 24 34 37 33 1 1 4 40 38 8 4 7 38 37 3 7 12 A 3 32 15 16 2 A 5 10 13 27 14 11 26 17 28 6 25
5 Style Hood Ref. No. 1 Part No. Description 710-05070 Screw, 1/4-20 x .500 Ref. No. Part No. Description 23 731-04949A Grill Lens 2 710-0599 Hex Index Washer Screw, 1/4-20 x .500 24 731-05078C Dash 3 710-0604A Screw, 5/16-18 x .625 25 751-12089-28 Hose Vent, 3/16 EPA 4 710-05108 Screw, 1/4-15 x .750 26 738-04091A Shoulder Screw, 5/16-18, .43 x .
Frame and PTO Lift 53 18 17 4 19 10 13 B 22 4 27 16 46 45 51 26 A 57 8 5 12 30 28 C 34 A B 2 47 5 3 6 29 25 33 31 21 50 24 1 34 11 8 9 15 6 6 3 7 14 11 8 C 24 32 56 28 20 52 23 36 B 42 46“ Deck Lift 5 5 24 A 23 31 37 38 43 39 40 43 40 24 23 8 39 55 49 48 54 4 44 35 31 41 12 23
Frame and PTO Lift Ref. No. Part No. Description Ref. No. Part No. Description 1 683-04195 Support Bracket 30 747-04282 Deck Lift Handle 2 683-04649 Frame Assembly 31 747-04393 Lift Rod 3 710-0134 Screw Carriage, 1/4-20 x .62 32 783-04494C 42" Lift Arm, RH 4 710-04484 Screw 5/16-18 x .750 33 783-04711C 42" Lift Arm, LH 5 710-0599 Screw, 1/4-20 x .500 34 725-04363 Switch Interlock 6 710-3008 Hex Screw, 5/16-18 x .
Front End Steering 42 3 11 24 21 16 40 44 14 27 13 36 22 8 15 43 37 1 6 17 5 10 18 2 19 8 20 28 4 8 39 27 7 29 12 38 26 24 39 28 34 9 25 36 35 31 23 41 30 25 32 33 29 33 10
Front End Steering Ref. No. Part No. Description Ref. No. 25 Part No. Description 634-04086 Wheel Assembly, 42” 634-04639 Wheel Assembly, 46” 710-04484 Screw, 5/16-18 x .750 27 712-04065 Flangelock Nut, 3/8-16 Hex Screw, 5/16-18 x 1.75 28 914-0474 Cotter Pin, .125 x .
Seat and Fender 26 2 9 17 24 22 B 16 23 25 13 15 10 13 4 12 14 C 18 6 11 19 21 1 12 8 5 9 3 7 20 20 12 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 5 710-0134 Screw Carriage, 1/4-20 x .62 6 783-04587D Fender - Red 7 783-04843 Lift Adjuster Bracket - Powder Black 8 783-1489D Seat Mount Bracket - Powder Black 9 712-04063 Flangelock Nut, 5/16-18 10 732-1184 Extension Spring 11 936-0108 Flat Washer, .510x .750 x .
Transmission 86 27 89 88 3 29 87 37 7 19 16 54 36 32 30 66 19 24 2 35 57 46 21 44 8 9 50 22 12 9 68 28 62 18 58 43 64 60 15 78 C 59 15 80 18 70 48 55 59 10 17 63 61 79 85 83 82 63 47 25 48 45 86 11 75 77 72 33 26 1 39 38 14 76 74 31 5 59 40 23 67 31 51 42 71 8 8 15 53 41 6 73 49 34 81 45 56 69 13 85 84 81 14 7 65 4 20 C 52 51 8
Ref. Part No. Description Ref. Part No. Description 1 918-04566 Dr Asm, autodrive Lt-5 46 725-04363 Switch Interlock 2 17962 Plate Switch 47 736-0242 Bell Washer, .340 x .872 x .060 3 647-04035 Lvr Asm, shft 48 738-0372B Spcr, shldr, 1.00 X .38 X .38 738-04091A Scr, shldr, .43x.
42” Deck 1 58 50 11 40 9 16 3 52 32 23 29 8 34 45 25 37 12 53 1 6 60 44 9 10 46 28 24 4 35 30 2 22 16 27 8 5 57 16 6 47 14 20 13 41 16 38 43 56 39 17 21 51 16 31 19 15 12 26 49 59 33 54 54 32 33 28 9 48 48 7 36 42 55 16 18
42” Deck Ref. Part Number Description Ref. Part Number Description 1. 918-04822A Spdl Asm, Pul, 6.3 Dia 31. 736-0225 Wash, Lock, 5/8, Int Tooth 2. 683-0254B Brkt Asm, Deck, Hngr Lh Lt 32. 736-0262 Wash, Flat, .385 X .870 X .092 3. 983-04511 Brake Asm, Deck, 42/46 33. 750-04936 Spcr, .792 X 1.060 X 1.860 Lg 4. 983-04525 Brake Asm, Deck, 46” 34. 736-0362 Wash, Flat, .330 X 1.25 X .06, Ht 5. 983-04572 Deck Asm, Sd, Offset, 42 W/ 2whl 35. 738-04146 Plug, Bolt, M16 X 1.5 6.
46” Deck 19 1 56 61 11 36 7 19 48 9 56 12 41 37 11 4 59 36 4110 38 30 52 62 50 27 14 54 5 13 53 34 10 66 54 25 24 67 26 40 42 39 33 19 17 6 8 18 55 16 18 43 19 57 35 22 23 19 19 32 44 20 63 58 18 64 65 8 49 3 66 65 1 2 29 45 61 7 46 15 56 60 28 20 31 47 51 21
46” Deck Ref. Part Number Description Ref. Part Number Description 1. 918-04865A Spdl Asm, Pul 6.93 Dia W/O Zerk 35. 736-0225 Wash, Lock, 5/8, Int Tooth 2. 683-0254B Brkt Asm, Deck, Hngr Lh Lt 36. 736-0262 Wash, Flat, .385x.870x.092 3. 631-04288 Chute Deflector Assembly 37. 936-0344 Wash, Flat, .385 X 1.0 X .030 4. 983-04511 Brake Asm, Deck, 42/46 38. 736-0362 Wash, Flat, .330x1.250x.060, Hd 5. 983-04525 Brake Asm, Deck, 46" 39. 736-0371 Wash, Flat, .343 X .880 X .062 6.
B&S Model 28 6 9 10 8 7 4 3 4 11 13 5 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 - 725-04567F 22
Notes 23
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.
