| Problem | Cause | Remedy |
| Engine fails to start | - PTO/Blade Engage lever engaged.
- Parking brake not engaged.
- Spark plug wire(s) disconnected.
- Throttle/Choke control lever not in correct starting position.
- Choke not activated
- Fuel tank empty, or stale fuel.
- Blocked fuel line.
- Faulty spark plug(s).
- Engine flooded.
- Blown Fuse(s)
| - Place lever in disengaged (OFF) position.
- Engage parking brake.
- Connect wire(s) to spark plug(s).
- Place Throttle/Choke lever into the FAST position.
- Move the Throttle/Choke lever into the Choke position.
- Fill tank with clean, fresh (less than 30 days old) gas.
- Replace the fuel line and replace fuel filter.
- Clean, adjust gap or replace plug(s).
- Crank engine with throttle in FAST position.
- Replace Fuse(s) See "Fuse" in Service and Maintenance section.
|
| Engine runs erratically | - Unit running with CHOKE activated.
- Spark plug wire(s) loose.
- Blocked fuel line or stale fuel.
- Vent in gas cap plugged.
- Water or dirt in fuel system.
- Dirty air cleaner.
| - Deactivate the CHOKE.
- Connect spark plug wire(s).
- Replace the fuel line; fill tank with clean, fresh gasoline and replace fuel filter.
- Clear vent or replace cap if damaged.
- Drain fuel tank. Refill with clean, fresh gasoline.
- Replace air cleaner paper element or clean foam pre-cleaner, if equipped.
|
| Engine overheats | - Engine oil level low.
- Air flow restricted.
| - Fill crankcase with proper amount and weight of oil.
- Clean grass clippings and debris from around the engine's cooling fins and housing.
|
| Engine hesitates at high RPM | - Spark plug gap too close.
| - Remove spark plug and reset the gap.
|
| Engine idles rough | - Spark plug fouled, faulty or gap too wide.
- Dirty air cleaner.
| - Replace spark plug. Set plug gap.
- Replace air cleaner element and/or clean precleaner.
|
| Excessive vibration | - Cutting blade loose or unbalanced.
- Damaged or bent cutting blade.
| - Tighten blade and spindle.
- Replace blade.
|
| Mower will not mulch grass | - Engine speed too low.
- Wet grass.
- Excessively high grass.
- Dull blade.
| - Place throttle in FAST (rabbit) position.
- Do not mulch when grass is wet.
- Mow once at a high cutting height, then mow again at desired height or make a narrower cutting swath.
- Sharpen or replace blade.
|
| Uneven cut | - Deck not leveled properly.
- Dull blade.
- Uneven tire pressure.
| - Perform side-to-side deck adjustment.
- Sharpen or replace blade.
- Check tire pressure in all four tires.
|
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