The Craftsman 917.272921 is a riding lawn mower featuring a 42-inch cutting deck, powered by a Briggs & Stratton engine. This manual provides detailed parts diagrams, part numbers, and ordering information for maintenance and repair. Below are key sections for identification, engine parts, deck assembly, drive system, electrical components, and troubleshooting.
Locate the model and serial number plate on the frame under the seat or on the rear fender. Use these numbers when ordering parts.
| Specification | Description |
|---|---|
| Model Number | 917.272921 |
| Engine | Briggs & Stratton, 17.5 HP, OHV, Single Cylinder |
| Cutting Width | 42 inches |
| Deck Type | Stamped Steel, 3-Blade |
| Transmission | Peerless 5-Speed Manual Gear Drive |
| Fuel Capacity | 2.5 Gallons |
| Oil Capacity | 1.5 Quarts |
| Battery | 12V, 280 CCA |
| Overall Dimensions | 72" L x 54" W x 42" H (approx.) |
| Weight | Approx. 450 lbs |
Parts for the Briggs & Stratton 17.5 HP engine (Model 31C707-0237-E1). Always disconnect spark plug before servicing.
WARNING! Engine parts are under high pressure and temperature. Allow engine to cool completely before disassembly.
42-inch stamped steel deck with three spindle assemblies. Replace blades annually or when damaged.
CAUTION! Always disconnect spark plug wire and ensure blades have stopped before working on deck.
Peerless 5-speed manual transmission with shift lever and chain drive to rear axle.
12-volt system with key start, alternator charging, and safety interlock switches.
Components: Battery, starter solenoid, ignition switch, voltage regulator, wiring harness, headlight bulbs, safety switches (seat, brake, PTO), fuses (20A).
| Part | Part Number | Description |
|---|---|---|
| Battery | U1-3 | 12V, 280 CCA |
| Starter Motor | 499770 | 12V DC |
| Ignition Switch | 925-0451 | Key start with positions |
| PTO Switch | 925-1940 | Blade engagement switch |
| Headlight Assembly | 532-401-0005 | Left/right headlight |
Steering wheel, tie rods, and control linkages for operation.
Tip: Lubricate all pivot points and linkages annually with grease.
Main frame, fenders, seat, and body panels.
WARNING! Inspect frame for cracks or damage before operation.
Front: 15x6.00-6 tires. Rear: 20x10.00-8 tires.
Parts: Front wheel assembly (including rim, tire, bearing), rear wheel assembly, valve stems, lug nuts, axle spacers.
Drive belt and deck belt specifications and replacement parts.
| Belt | Part Number | Length/Type |
|---|---|---|
| Main Drive Belt | 144959 | 1/2" x 95-1/2" |
| Deck Drive Belt | 140294 | 1/2" x 108" |
| PTO Idler Pulley | 532-402-0115 | Idler assembly with spring |
| Engine Pulley | 123756X | 5/8" bore, 7" diameter |
Common hardware: Hex bolts (grade 5), lock nuts, washers, cotter pins, hairpin clips, roll pins.
CAUTION! Always replace hardware with equivalent grade. Do not reuse stretched or damaged bolts.
Use the model number (917.272921) and part numbers from this manual when ordering.
| Symptom | Common Part Needed | Ordering Info |
|---|---|---|
| Engine won't start | Spark plug, fuel filter | Use Briggs & Stratton part numbers |
| Deck vibration | Spindle bearings, blades | Order complete spindle kit |
| Loss of drive | Drive belt, shift linkage | Check belt routing diagram |
| Electrical failure | Fuse, ignition switch | Test with multimeter first |
| Steering loose | Tie rod ends | Check for play before ordering |
Warranty: Limited warranty from date of purchase. Contact Craftsman customer service for warranty claims.
Service: 1-888-331-4569; www.craftsman.com