Owner’s manual
View engine
How much does it cost to replace a riding lawn mower engine?
For a Craftsman riding tractor like model 917286220, a full engine replacement (parts plus labor) typically runs about $260 to $1,800, with around 6 hours of labor in many shops. The exact total depends on the engine type, whether you replace related wear items, and local labor rates.
What drives the total cost
- Engine price (new vs. remanufactured vs. used)
- Labor time (engine swap, wiring, throttle/choke linkages, belt and PTO setup)
- Extra parts often replaced at the same time (belts, pulleys, fuel filter, battery)
- Shop fees (pickup/delivery, diagnostics, disposal)
- Condition of the tractor (rusted fasteners, damaged wiring, worn deck spindles)
Typical cost breakdown
| Item | Typical range | Notes |
|---|---|---|
| Replacement engine | $200 to $1,400 | Varies by horsepower and crankshaft specs |
| Labor | $200 to $600 | Often based on ~4 to 8 hours |
| “While you’re in there” parts | $0 to $300 | Belts, pulleys, fuel system tune-up items |
| Total installed | $260 to $1,800 | Common real-world range |
Smart checks before you buy an engine
We recommend ruling out common “no start” causes first, because the manual’s troubleshooting steps often point to simpler fixes like battery, wiring, fuse, ignition switch, solenoid, or starter.
- Confirm the brake pedal is depressed and the attachment clutch is disengaged
- Check the battery condition and clean/tighten terminals
- Inspect wiring connections and the fuse
- Test the starting circuit components (ignition switch, solenoid, starter)
- If it cranks but runs poorly, check maintenance items (spark plug, fuel filter, air intake cooling areas)
Helpful references: 917286220 owner’s manual, riding lawn mower engine spins but wont start video
Why it matters
An engine replacement can make sense if the tractor’s deck, transaxle, and steering are in good shape. If multiple major systems are worn (for example, drive belt issues plus deck spindle wear), comparing repair totals to replacement value helps you avoid sinking money into a tractor that still will not perform well.
Last updated: January 2026
What engine does Craftsman riding mower use?
The Craftsman riding mower model 917286220 uses a single-cylinder, low-emission gasoline engine (horsepower varies by exact configuration). For the correct engine family details, tune-up specs, and maintenance intervals for your tractor, follow the 917286220 owner's manual.
How to identify the exact engine on your 917286220
Use these quick checks to match the engine to the right parts (air filter, spark plug, fuel filter):
- Look for the engine ID label on the blower housing or valve cover (often lists model, type, and code).
- Record the engine model and type numbers exactly as printed.
- Compare the label info to the engine section in the manual.
- If the tractor has been repowered, use the engine label, not the tractor model number.
- Match parts by engine numbers first, then confirm fit by tractor model.
What we know from the manual (model-specific)
Your documentation for model 917286220 describes a front-engine lawn tractor with these key traits:
| Item | What to expect on 917286220 |
|---|---|
| Engine type | Gas, single-cylinder, low-emission |
| Starting | Electric start |
| Drive system | Automatic transmission |
| Deck size referenced | 42-inch mower deck |
Why it matters
The engine model determines the correct maintenance parts and settings. Using the wrong spark plug, air filter, or oil type can cause hard starting, poor power, and faster wear.
Related maintenance tip
If you are chasing rough running or weak cutting power, keep the deck side in good shape too. A worn belt or damaged mandrel can affect blade speed and cut quality; the troubleshooting guidance in the manual points to belt and mandrel issues when blades will not rotate.
- Consider inspecting the deck drive belt for glazing or cracking.
- Check for a seized idler pulley or frozen mandrel.
- Keep the area around mandrels clear so vent holes do not clog.
Helpful part examples for deck service:
- Lawn tractor mandrel shaft assembly 587819701
- Lawn tractor ground drive or blade drive belt, 1/2 x 92-2/5-in 592855201
Last updated: January 2026
Who makes the Craftsman 420cc engine?
For the Craftsman riding tractor model 917286220, the engine manufacturer is identified by the engine’s own model and type codes on the engine label (not by the tractor model number). We use the 917286220 owner's manual to match those engine codes to the correct service parts and specifications.
How to identify who made your 420cc engine
Look for the engine ID label (usually on the blower housing, valve cover area, or near the starter). Record:
- Engine brand name printed on the shroud (if present)
- Model number
- Type/spec number
- Code/date number
- Any emissions family information
Once you have those codes, we can match the correct carburetor, air filter, spark plug, starter, and fuel system parts for your exact engine.
Quick checks that help confirm you are looking at the right engine
These details prevent ordering the wrong parts when multiple engines were used across similar Craftsman tractors:
- Tractor model: 917286220 (from the tractor ID tag)
- Deck size: typically 42-inch on this series
- Starting system: electric start
- Transmission: automatic
What this means for parts and maintenance
Even when two tractors both say “420cc,” the service parts can differ by engine family. Use the engine label plus the manual to stay accurate.
| What you have | Where to find it | Why it matters |
|---|---|---|
| Tractor model (917286220) | Tractor frame ID tag | Matches chassis, deck, and drive parts |
| Engine model/type/code | Engine label | Matches engine tune-up and fuel parts |
| Deck and belt routing | Manual diagrams | Prevents belt misrouting and poor cut |
Why it matters
The “420cc” number describes displacement, not the manufacturer. The engine label is the reliable way to identify who built it and to ensure the correct replacement parts and tune-up specs.
Last updated: January 2026
