This document serves as an illustrated parts book for various MTD lawn tractor models, providing detailed part numbers and descriptions for components and assemblies. It covers a wide range of models and engine types.
Model Coverage
The parts lists and diagrams are organized by model series, including but not limited to:
- Models 660, 670
- Models 661, 671
- Models 662, 672
- Models 663, 673
- Model 674
- Models 665, 675
- Models 667, 677
- Model 678
- Model 679
- Model 67A
- Single Cylinder Engines (Briggs & Stratton, Tecumseh)
- Twin Cylinder Engines (Briggs & Stratton)
- Kohler Engines
- Intek Twin Engines
Front End Assembly
Diagrams illustrate the front end of the tractors, showing the hood, grille, headlight bezels, and associated mounting hardware. Key parts include:
REF. NO. | PART NO. | DESCRIPTION |
---|---|---|
1 | 783-0250 | Hood |
8 | 731-1099A | Headlight Lens (w/o Logo) |
10 | 731-1097E | Grille |
34 | 17870A | Fender |
35 | 17871B | Fender w/Cutout |
Steering and Control Systems
Details on steering wheels, steering shafts, choke controls, ignition switches, and related hardware are provided. Examples include:
REF. NO. | PART NO. | DESCRIPTION |
---|---|---|
23 | 725-0267 | Ignition Switch |
24 | 725-0201 | Ignition Key |
25 | 746-0616A | Choke Control 23" Lg. |
25 | 746-0614A | Choke Control 38" Lg. |
26 | 725-0634 | Light Switch** |
27 | 725-0925 | Ammeter** |
Chassis and Drivetrain Components
This section covers parts related to the chassis, transaxle, drive belts, pulleys, and wheels. Key components include:
REF. NO. | PART NO. | DESCRIPTION |
---|---|---|
754-0280A | Variable-Speed Belt | |
754-0440 | V-Belt | |
756-0982 | Engine Pulley | |
756-0638 | Pulley Double Deck 5" O.D. | |
756-0627 | Flat Idler Pulley 3.5 O.D. | |
56 | 736-0119 | L-Wash. 5/16" I.D.* |
57 | 712-0265 | Hex Sems Nut 5/16-18 Thd.* |
Deck Assemblies
The document details parts for different deck types, identified as Deck "F", Deck "H", and others. These sections include diagrams and part lists for blades, spindles, pulleys, belts, and deck mounting hardware.
Example Parts (Deck "F"):
REF. NO. | PART NO. | DESCRIPTION |
---|---|---|
2 | 710-1260A | Hex Wash. TT-Tap Scr. 5/16-18 x .75" |
3 | 683-0129 | 38" Deck Ass'y.** |
4 | 753-0694 | 38" Deck Ass'y. Comp. (For Service)** |
39 | 618-0138 | Blade Spdl Ass'y. (Incl. Ref. 28, 35, 42) |
42 | 756-0969 | 5" Dia. Pulley† |
55 | 731-1032 | Chute Ass'y. (Incl. Ref.10, 52, 53, 54, 55) |
Engine Specific Components
Parts are also listed for specific engine manufacturers and types, including Briggs & Stratton (Single Cylinder, Twin Cylinder), Tecumseh, and Kohler engines. This covers components like mufflers, exhaust pipes, carburetors, and ignition systems.
Example Parts (Kohler Engine):
REF. NO. | PART NO. | DESCRIPTION |
---|---|---|
1 | 710-0148 | Hex Tap Scr. #8-32 x .38" Lg. |
3 | 710-0604 | Hex Wash. TT-Tap Scr. 5/16-18 x .62" |
14 | 751-0617 | Muffler |
15 | 751-0621 | Exhaust Pipe |
18 | 783-0615 | Muffler Bracket. |
Wiring Diagrams
Wiring diagrams are included for various engine types, illustrating harness adapters, switches, solenoids, and other electrical components. Key electrical parts include:
REF. NO. | PART NO. | DESCRIPTION |
---|---|---|
2 | 725-1426 | Solenoid |
3 | 725-1643 | Safety Switch (Reverse) |
4 | 725-0925 | Ammeter (Optional) |
5 | 725-0963 | Bulb (Headlight) |
6 | 725-0634 | Light Switch (Optional) |