What engine does Craftsman riding mower use?
The Craftsman riding mower model 917255372 is a front-engine lawn tractor, but the exact engine brand and horsepower can vary by build and is best confirmed from the engine ID tag on your tractor. Once you match that engine information, you can choose the correct tune-up and starting-system parts for your mower.
Look for the engine identification label, then record the numbers exactly.
- Lift the hood and locate the engine ID tag (often on the blower housing, valve cover, or near the starter)
- Write down engine brand (commonly Briggs & Stratton, Kohler, or Tecumseh on older units)
- Record the model, type, and code (or spec) numbers from the tag
- Match those numbers when ordering ignition, fuel, and maintenance parts
- If the tag is missing, use the tractor’s product ID label plus the engine’s physical features (air filter style, carb layout)
These are common on Craftsman front-engine lawn tractors of this era; use your engine tag to confirm.
| Engine type | Typical horsepower range | What it affects most |
|---|---|---|
| Single-cylinder OHV | 12.5 to 19.5 HP | Basic tune-up parts, starting behavior, vibration |
| V-twin OHV | 18 to 24 HP | Smoother running, higher torque, different filters/plugs |
If you are troubleshooting a no-start or intermittent starting issue, these tractor-level parts are commonly involved.
- Ignition and starting circuit checks often lead to the lawn tractor ignition switch 532365402
- Loose hardware on linkages, shields, and brackets can cause vibration and misalignment; inspect fasteners like the thread rolling screw, 5/16-18 x 3/4-in 596030701
- If the engine cranks slowly, confirm battery condition and cable connections before replacing parts
Engine identification prevents wrong-part returns. The same tractor model can be paired with different engines over production runs, and engine model/type/code is what determines the correct air filter, spark plug, carburetor parts, and many tune-up items.
Last updated: January 2026
How much does it cost to replace a riding lawn mower engine?
For a Craftsman riding lawn tractor like model 917255372, a full engine replacement typically costs about $260 to $1,800 installed, depending on the engine type, labor rates, and whether extra parts (belts, pulleys, wiring) are needed during the swap.
- Engine price: new replacement engines vary widely by horsepower, shaft size, and brand.
- Labor time: engine swaps on riding mowers commonly take around 5 to 8 hours.
- Extra parts: worn drive components often get replaced at the same time.
- Shop fees: pickup/delivery, disposal, and diagnostic charges can add to the bill.
- Condition of the tractor: rusted fasteners, damaged wiring, or fuel system issues increase labor.
| Cost item | Typical range | Notes |
|---|---|---|
| Replacement engine | $200 to $1,400 | Biggest variable; must match crankshaft specs |
| Labor | $200 to $700 | Based on local hourly rate and time |
| “While you’re in there” parts | $0 to $300 | Belts, pulleys, hardware, battery cables |
| Total installed | $260 to $1,800 | Common real-world range |
Even if the engine is the main issue, we often see these items addressed to prevent repeat problems:
- Ignition and starting components, such as the lawn tractor ignition switch 532365402
- Belt routing wear items, such as an idler pulley
- Deck or drive pulleys if they wobble or squeal
- Mounting hardware (bolts, washers, retainers) if corroded or missing
A correctly matched engine (shaft diameter, shaft length, crank orientation, charging output) prevents fitment problems and protects the PTO, drive system, and mower deck from vibration and premature wear.
Last updated: January 2026
Is it worth replacing a lawn mower engine?
Yes, replacing the engine on your Craftsman lawn tractor model 917255372 is worth it when the deck, frame, steering, and transmission are still solid and the total swap cost stays well below the price of a comparable new rider. If multiple systems are worn or the repair cost is around half the cost of replacement, replacing the tractor is the better value.
- Deck shell is not rusted through; spindles are quiet and tight
- Transmission drives smoothly; no slipping, whining, or loss of power
- Steering and front axle are tight; no severe wobble
- You can match engine mounting pattern and crankshaft size (diameter, length, keyway)
- You are prepared for several hours of work plus setup and test runs
| Option | Typical cost level | Skill/time | Best when |
|---|---|---|---|
| Replace complete engine | High | Moderate | You want the most predictable reliability |
| Replace short block | Medium | High | Accessories are good; internal damage is confirmed |
| Replace tractor | Highest | Low | Deck, drive, and steering all show heavy wear |
- Electrical starting circuit: battery cables, grounds, and key switch operation (see lawn tractor ignition switch 532365402)
- Belt and pulley wear: idlers and belt routing issues can add cost quickly (see idler pulley 532104679)
- Tires and wheels: dry rot, repeated flats, and rim damage
An engine swap restores power and reliability, but the deck and drivetrain determine whether the chassis has years left. Inspecting those systems first prevents sinking money into a tractor that will need major repairs next.
If the engine only clicks or cranks slowly, rule out battery, solenoid, wiring, and safety interlocks before buying an engine: riding lawn mower engine clicks but doesnt turn over video
Last updated: January 2026
