Owner’s manual
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How much does it cost to replace a riding lawn mower engine?
Replacing the engine on a Craftsman riding lawn tractor model 917256500 typically costs $800 to $2,500 total (engine plus labor), depending on the exact engine model, whether you choose new or rebuilt, and local shop rates. Engine replacement is a major repair, so we recommend confirming your engine model and mounting style in the 917256500 owner's manual.
These are the biggest factors that change the price:
- Engine type and horsepower (your tractor uses a specific engine model and type)
- New vs. rebuilt vs. used engine (new costs more, rebuilt can save money)
- Labor time (engine swaps on riders are commonly a half-day job)
- Extra parts discovered during the swap (belts, pulleys, wiring, fuel line)
- Shop minimums and pickup/delivery fees
Costs vary by region, but this is a realistic planning range for a riding mower engine replacement.
| Cost item | Typical range | Notes |
|---|---|---|
| Engine (new or rebuilt) | $500 to $1,900 | Biggest variable; match crankshaft size and PTO setup |
| Labor | $300 to $900 | Often 3 to 6+ hours depending on rust, access, and wiring |
| Misc. parts and fluids | $25 to $200 | Oil, filter, fuel filter, clamps, hardware |
| Total installed | $800 to $2,500 | Common real-world range |
We recommend verifying these details first so the replacement engine fits and works correctly:
- Engine model and type number (listed on the engine blower housing; also referenced in the manual)
- Crankshaft diameter and length (must match your pulley and PTO setup)
- Charging system output (must support your electric start and battery charging)
- Throttle and choke linkage style
- Muffler and exhaust routing (clearance under the hood)
An engine that is close but not exact can create belt alignment problems, PTO engagement issues, or wiring mismatches. Confirming the engine identification and key measurements up front prevents repeat labor and return hassles.
Last updated: January 2026
Is it worth replacing a lawn mower engine?
Replacing the engine on a Craftsman riding tractor like model 917256500 is worth it when the deck, transmission, and steering are still solid and the total engine swap cost stays well below the cost of a comparable new tractor. If the tractor has multiple worn systems, replacement usually makes more sense.
- The mower deck is not rusted through and still cuts evenly after leveling
- The tractor drives and shifts normally (no slipping, no loss of power under load)
- The wiring and safety interlock system are intact (no hacked switches)
- You can do the work safely (engine removal, belt routing, fuel line handling)
- The engine swap cost is under about 50% of a comparable replacement tractor
| Option | Typical cost range | Time/effort | Best when |
|---|---|---|---|
| Replace engine (complete) | Higher | Medium to high | You want a fresh start and warranty-style reliability |
| Replace short block | Medium | High | Top end is damaged but accessories are reusable |
| Repair existing engine | Low to medium | Medium | Problem is fuel, spark, compression, or maintenance related |
| Replace tractor | Highest | Low | Deck, belts, steering, and engine are all tired |
Many no-start or low-power complaints are caused by maintenance items, not a failed engine. The manual points to basics like battery condition, wiring, spark plug, fuel filter, air filter, oil level, and debris buildup under the deck. Use the 917256500 owner’s manual to follow the troubleshooting chart and safety steps.
- Check battery charge and clean battery terminals
- Inspect wiring connections and safety switches
- Replace the spark plug (often recommended every season or 100 hours)
- Replace a dirty fuel filter and drain stale fuel
- Clean grass buildup under the mower housing and around mandrels
An engine swap is a big investment; if the real issue is a worn belt, clogged fuel system, or vibration from a blade or mandrel problem, you can restore performance for far less money and avoid unnecessary downtime.
Last updated: January 2026
What engine does Craftsman riding mower use?
The Craftsman riding mower model 917256500 uses a Briggs & Stratton engine; the owner’s manual lists engine model 28R707, type 0140-01 for this tractor. Use the numbers on the engine blower housing to match the correct tune-up and engine parts in the 917256500 owner's manual.
Use these steps to confirm the exact engine tag information before ordering parts:
- Lift the hood and locate the engine blower housing (the shroud over the flywheel).
- Find the Briggs & Stratton ID label or stamped numbers.
- Record the model, type, and code from the engine tag.
- Match the model and type to the manual listing (28R707, 0140-01).
- Use the engine ID when selecting maintenance items like spark plugs, air filters, and fuel system parts.
| What to look for | Typical location | What it helps you do |
|---|---|---|
| Tractor model: 917256500 | Model plate under the seat | Find chassis, deck, steering, and belt parts |
| Engine model: 28R707 | Engine blower housing | Match Briggs & Stratton engine parts and specs |
| Engine type: 0140-01 | Engine blower housing | Match the correct carburetor, ignition, and internal parts |
Craftsman tractors that look similar can use different Briggs & Stratton engines. Using the engine model and type prevents wrong-part returns and helps you get the right service parts for starting, fuel delivery, and routine maintenance.
Last updated: January 2026
