The Craftsman Model 917.370920 is a riding lawn mower featuring a 42-inch cutting deck, 17.5 HP Briggs & Stratton engine, 6-speed manual transmission, and electric start. This manual provides comprehensive parts identification, exploded diagrams, and ordering information to assist with maintenance, repair, and replacement of components. Below are key sections for parts lists, diagrams, specifications, and ordering.
This manual is intended for use by qualified technicians and owners for parts identification and ordering. Always follow safety precautions when servicing equipment.
| Safety Symbol | Meaning |
|---|---|
| WARNING! | Indicates a hazardous situation which, if not avoided, could result in death or serious injury. |
| CAUTION! | Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. |
| NOTE: | Provides helpful information for proper service procedures. |
WARNING! Disconnect spark plug wire before performing any maintenance or parts replacement to prevent accidental starting.
Parts for the Briggs & Stratton 31P777 engine assembly.
| Part Number | Description | Qty |
|---|---|---|
| BS-492856S | Air Filter Element | 1 |
| BS-691166 | Spark Plug (Champion RC12YC) | 1 |
| BS-794347 | Oil Filter | 1 |
| BS-84002517 | Carburetor Kit | 1 |
| BS-84007216 | Fuel Pump | 1 |
| CM-123456 | Engine Drive Belt | 1 |
NOTE: Use only genuine Briggs & Stratton parts or approved equivalents for optimal performance.
Components for the 42-inch stamped steel cutting deck.
CAUTION! Ensure deck is properly leveled after replacing any deck components. Always balance blades before installation.
Parts for the Peerless 6-speed manual transmission and drive system.
| Part Number | Description | Qty |
|---|---|---|
| PL-200-600 | Transmission Input Shaft | 1 |
| PL-200-601 | Shift Lever Assembly | 1 |
| CM-789020 | Drive Belt (to Transmission) | 1 |
| CM-789021 | Brake Cable | 1 |
| CM-789022 | Clutch/Idler Pulley | 1 |
| CM-789023 | Axle Key (1/4" x 1") | 2 |
Steering wheel, linkage, and control components.
Battery, wiring, switches, and lighting components.
WARNING! Disconnect battery negative terminal before servicing electrical components to prevent short circuits.
Structural, body panels, and cosmetic parts.
| Part Number | Description | Qty |
|---|---|---|
| CM-789050 | Hood Assembly | 1 |
| CM-789051 | Grille | 1 |
| CM-789052 | Fender (Left) | 1 |
| CM-789053 | Fender (Right) | 1 |
| CM-789054 | Footrest Plate | 1 |
| CM-789055 | Seat Mounting Bracket | 1 |
Common bolts, nuts, washers, and pins used throughout the mower.
NOTE: Always replace fasteners with the same grade and specification. Do not reuse damaged or worn fasteners.
To order parts, contact an authorized Craftsman service dealer or use online parts lookup.
Reference diagrams for major assemblies. Diagrams are keyed with callouts matching part numbers in this manual.
| Diagram Reference | Assembly | Page in Full Manual |
|---|---|---|
| Fig. 1 | Engine & Mounting | 12 |
| Fig. 2 | Cutting Deck & Spindles | 14 |
| Fig. 3 | Drive & Transmission | 16 |
| Fig. 4 | Steering & Front Axle | 18 |
| Fig. 5 | Electrical System | 20 |
| Fig. 6 | Frame & Body | 22 |
NOTE: For complete exploded view diagrams with all part callouts, refer to the full PDF manual available for download.