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Problem Cause Remedy
Engine fails to start
2. Parking brake not engaged.
3. Spark plug wire(s) disconnected.
Throttle/choke control lever not in correct
starting position.
5. Fuel tank empty, or stale fuel.
Blocked fuel line.
7. Faulty spark plug(s).
8. Engine flooded.
2. Engage parking brake.
3. Connect wire(s) to spark plug(s).
position.
5. Fill tank with clean, fresh (less than 30 days
old) gas.
Clean fuel line and replace fuel filter.
7. Clean, adjust gap or replace plug(s).
8. Crank engine with throttle in FAST position.
Engine runs erratic
2. Spark plug wire(s) loose.
3. Blocked fuel line or stale fuel.
Vent in gas cap plugged.
5. Water or dirt in fuel system.
Dirty air cleaner.
position.
2. Connect spark plug wire(s).
3. Clean fuel line; fill tank with clean, fresh
gasoline and replace fuel filter.
Clear vent or replace cap if damaged.
5. Drain fuel tank. Refill with clean, fresh
gasoline.
Replace air cleaner paper element or clean
foam pre-cleaner.
Engine overheats Engine oil level low.
2. Air flow restricted.
Fill crankcase with proper amount and
weight of oil.
2. Clean grass clippings and debris from around
Engine hesitates at high
RPM
Spark plug(s) gap too close. Remove spark plug(s) and reset the gap.
Engine Idles rough Spark plug(s) fouled, faulty or gap too wide.
2. Dirty air cleaner.
Replace spark plug(s). Set plug gap.
2. Replace air cleaner element and/or clean
pre-cleaner.
Excessive vibration Cutting blade loose or unbalanced.
2. Damaged or bent cutting blade.
Tighten blade and spindle.
2. Replace blade.
Uneven cut Deck not leveled properly.
2. Dull blade.
3. Uneven tire pressure.
Perform side-to-side deck adjustment.
2. Sharpen or replace blade.
3. Check tire pressure in all four tires.
Troublesh ooting
8
30
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