Owner’s manual
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How much does it cost to replace a riding lawn mower engine?
For a Craftsman riding mower like model 917275282, a full engine replacement typically runs about $260 to $1,800 installed, depending on the engine, labor rates, and whether related items (belts, wiring, fuel parts) also need service. Use the owner's manual to confirm maintenance checks before replacing the engine.
What drives the total replacement cost
- Engine type and horsepower (exact replacement vs. compatible engine)
- Labor time (riding mower engine swaps commonly take several hours)
- Extra parts found during teardown (belts, pulleys, electrical switches)
- Fuel system condition (old fuel, clogged filter, brittle fuel lines)
- Cooling and exhaust condition (overheating damage, muffler issues)
Before you replace the engine: quick checks that often save money
The manual calls out maintenance items that can prevent overheating and fuel starvation, both of which can mimic “bad engine” symptoms.
- Clean the air intake and cooling areas (grass screen, cooling fins, shrouds)
- Replace the spark plug at the start of each mowing season or every 100 hours
- Replace the in-line fuel filter once each season
- Inspect the muffler and spark arrester (if equipped) for corrosion
- Verify the mower is not being run with blocked cooling areas (overheating can cause engine damage)
Related deck and drive issues that can feel like an engine problem
If the engine runs but the mower does not cut or move correctly, the issue is often in the deck or drive system, not the engine.
| Symptom | Common cause | Typical fix |
|---|---|---|
| Blades will not rotate | Worn/broken mower drive belt, frozen idler pulley | Replace belt or idler pulley |
| Poor cut or discharge | Deck not level, wet grass, buildup under deck | Level deck, clean underside |
| Loss of drive | Motion drive belt worn, freewheel disengaged | Engage freewheel, replace belt |
If your blades will not rotate and you find a seized or noisy idler, a common wear item to check is the lawn tractor blade idler pulley 532177968.
Why it matters
Replacing an engine is one of the highest-cost repairs on a riding mower. Doing the cooling, ignition, and fuel checks first helps you avoid replacing a good engine when the real problem is airflow restriction, a clogged fuel filter, or a deck/drive component.
Last updated: February 2026
What engine does Craftsman riding mower use?
The Craftsman garden tractor model 917275282 uses a 27.0 HP engine (with electric start) as shown in the owner's manual. This model is also identified as a low-emission engine design, so it can run a bit differently than older tractors.
What we know for model 917275282
From the model documentation, these are the key engine-related identifiers:
- Engine output: 27.0 HP
- Starting system: electric start
- Emissions design: low-emission engine (operates differently than previous engines)
- Tractor type: front-engine garden tractor
How to identify the exact engine make and model on your tractor
Horsepower alone does not uniquely identify the engine manufacturer or model. For the exact engine brand and model used on your specific unit, check these common locations:
- Engine ID label on the blower housing (top or side of the engine)
- Valve cover area (often a sticker or stamped tag)
- Frame rail near the engine compartment
- Under the hood near the air filter housing
Quick checklist
- Write down the engine model, type, and code/spec from the label
- Match that information to the engine parts list in the owner's manual
- Use the tractor model number 917275282 when selecting tractor parts such as belts, pulleys, and switches
Why it matters
The tractor model number (917275282) is the best way to match chassis and deck parts, but the engine label is the best way to match engine-specific tune-up parts (like filters, plugs, and carburetor components). Using both prevents ordering the wrong parts.
Common related parts customers replace on this model
If you are troubleshooting a no-start or blades-not-engaging issue, these model-matched parts are often involved:
| Symptom | Common area to check | Example model-matched part |
|---|---|---|
| Blades will not engage | PTO electrical circuit | Pto switch 582107601 |
| Poor cut or belt issues | Deck drive system | Husqvarna lawn tractor primary blade drive belt, 5/8 x 90-3/32-in 532174368 |
| Squealing or belt slip | Idler pulleys | Lawn tractor blade idler pulley 532177968 |
Last updated: February 2026
Is it worth replacing a lawn mower engine?
Yes, replacing the engine on your Craftsman 917275282 front-engine lawn tractor is worth it when the tractor’s deck, steering, and drivetrain are still solid and the total repair cost stays well below the cost of replacing the whole tractor. It is usually not worth it when the tractor has multiple worn systems or significant deck damage.
Quick decision checklist
- The mower deck is straight (no cracks, heavy rust-through, or bent spindles)
- The transmission still drives smoothly (no slipping or loss of drive)
- Steering and front axle are tight (no severe wobble)
- You can source the correct engine and any swap hardware you need
- The engine replacement cost is clearly less than a comparable replacement tractor
What to inspect before you spend money
Use this as a fast condition check before committing to an engine swap:
| Area | What to look for | What it usually means |
|---|---|---|
| Deck and blade system | Excess vibration, damaged blades, loose mandrels | Deck repairs may be needed along with the engine |
| Cooling and debris buildup | Grass packed around engine cooling areas | Overheating risk; maintenance may prevent repeat failure |
| Drive system | “Loss of drive” symptoms, worn belts, idler noise | You may need belt and pulley work too |
| Safety interlocks | Seat/brake/PTO interlock not working correctly | Must be repaired for safe operation |
The owner's manual covers key safety and maintenance items like keeping cooling fins and screens clean, checking operator presence and interlock operation, and safe blade service practices.
Costs that commonly get overlooked
Even when the engine is the main failure, these items often add cost and time:
- Belts and idlers (especially if the tractor had drive or deck issues)
- Electrical items (battery cables, wiring repairs, switches)
- PTO engagement components (if the deck will not engage reliably)
- Hardware you may replace during reassembly (nuts, caps, retainers)
If your deck engagement is intermittent, a common related part on this model is the pto switch 582107601.
Why it matters
An engine swap can extend the life of a good Craftsman tractor for years, but it only pays off when the rest of the machine is in good condition. Checking drivetrain performance, deck condition, and safety interlocks first helps you avoid putting a new engine into a tractor that still will not mow or drive correctly.
Last updated: February 2026
