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What model number is the Craftsman 917257730?
The model number for this Craftsman front-engine lawn tractor is 917.257730 (often written without the dot as 917257730). You can confirm it on the tractor’s model label and in the 917257730 owner's manual.
Where to find the model number on the tractor
We typically see the model number on the manufacturer’s ID label in one of these spots:
- Under the seat (seat pan area)
- On the frame near the rear wheels
- Under the hood near the engine compartment
- On the fender or footrest area
Why the dot matters (917.257730 vs 917257730)
Both formats refer to the same tractor; the dot is a formatting style used in many manuals and parts lists.
| You might see it as | What it means |
|---|---|
| 917.257730 | Model number as printed in the owner’s manual |
| 917257730 | Same model number, typed without punctuation |
Why it matters
Using the exact model number helps us match the correct riding mower and tractor parts (belts, pulleys, steering parts, fuel system parts) and avoid ordering a look-alike part that will not fit.
Last updated: January 2026
How much does it cost to replace a riding lawn mower engine?
For Craftsman lawn tractor model 917257730, a complete engine replacement typically costs $260 to $1,800 installed. Total price depends on the replacement engine cost, local labor rates, and whether you also replace wear items like belts, fuel components, and tune-up parts; plan on about 6 hours of labor.
What drives the total cost
- Engine choice: new, rebuilt, or used; direct-fit versus modified installation
- Labor time: removal, transferring pulleys/brackets, wiring hookup, test run
- Related parts: belts, idler pulleys, fuel lines, clamps, hardware
- Fluids and tune-up items: oil, filter, spark plug, air filter
- Service add-ons: pickup/delivery, shop supplies, disposal fees
Typical cost breakdown
| Cost item | Typical range | What it covers |
|---|---|---|
| Engine (part only) | $200 to $1,400 | Biggest variable; depends on horsepower and engine brand |
| Labor | $300 to $900 | Commonly 5 to 7 hours for riding mower swaps |
| Misc. parts/fluids | $20 to $200 | Belts, clamps, oil, filters, hardware |
Smart checks before replacing the engine
Many “won’t start” complaints are caused by electrical, fuel, or safety interlock issues, not a failed engine. Use the troubleshooting and maintenance sections in the 917257730 owner's manual to confirm basics first.
- Charge and load-test the battery; clean and tighten terminals
- Verify safety interlocks: seat switch, brake/clutch switch, and deck/PTO interlock
- Confirm fresh fuel and steady fuel flow from the tank
- Check for a blown fuse or damaged wiring at the starter circuit
- Inspect belts and pulleys for binding that can overload the engine
Why it matters
An engine swap is one of the highest-cost repairs on a riding mower. Pricing the job with labor plus common “while you’re in there” parts helps prevent repeat downtime and protects the new engine.
Last updated: January 2026
What engine does Craftsman riding mower use?
Craftsman lawn tractor model 917257730 uses an 18.0 HP twin-cylinder, electric-start gasoline engine. For the exact engine manufacturer and the engine model/type/code used on your tractor, match the engine ID tag to the specifications in the 917257730 owner's manual.
How to confirm the exact engine make and model on 917257730
Use the engine’s ID tag so you get the right tune-up and fuel-system parts.
- Find the engine ID label on the blower housing, valve cover, or near the starter
- Record the engine model, type, and code from that label
- Compare those numbers to the engine specifications section in the manual
- Use the engine ID (not just the tractor model) when selecting spark plug, air filter, and fuel filter
- If the label is dirty, wipe it clean; if it is missing, check the tractor’s product label and the manual’s specs
What “18.0 HP twin-cylinder electric start” means
| Spec | What you have on 917257730 | Why it matters |
|---|---|---|
| Horsepower | 18.0 HP | Helps match the correct engine family and service parts |
| Cylinders | Twin-cylinder | Typically uses different ignition and tune-up parts than single-cylinder engines |
| Starting | Electric start | Battery, solenoid, and safety interlocks affect cranking |
| Fuel system | Gasoline (carbureted) | Old fuel and varnish commonly cause hard-start issues after storage |
Why it matters
Knowing the exact engine ID prevents wrong-part returns and speeds troubleshooting for no-start, rough running, or power loss. It also helps you follow the correct oil, spark plug, and air filter maintenance intervals.
Related parts that can feel like an “engine problem”
If the engine runs but the tractor will not move or the blades will not spin, these parts are common causes:
- Lawn tractor ground drive belt, 1/2 x 84-1/2-in 532140218 (loss of drive)
- Lawn tractor drive v-belt 532144200 (blade drive issues)
- Switch 582107601 (PTO engagement problems)
Last updated: January 2026
