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SECTION 11: TROUBLESHOOTING
Trouble
Engine fails to start
Engine runs erratic
Engine overheats
Engine hesitates at high RPM Spark plug gap too close.
Idles poorly
Excessive vibration
Uneven cut
Possible Cause(s)
PTO knob (or lever) engaged.
Parking brake not engaged.
Spark plug wire(s) disconnected.
Throttle control lever not in correct
starting position.
Choke not activated
Fuel tank empty, or stale fuel.
Blocked fuel line.
Faulty spark plug.
Engine flooded.
Unit running with CHOKE applied.
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.
Engine oil level low.
Air flow restricted.
Spark plug fouled, faulty or gap too
wide.
Dirty air cleaner.
Cutting blade loose or unbalanced.
Damaged or bent cutting blade.
Deck not balanced properly.
Dull blade.
Uneven tire pressure.
Corrective Action
Disengage PTO.
Engage parking brake.
Connect wire(s) to spark plug.
Place throttle lever to FAST position.
Pull out the CHOKE control.
Fill tank with clean, fresh (less than 30 days old) gas.
Clean fuel line or replace fuel filter, if so equipped.
Clean, adjust gap or replace plug.
Crank engine with throttle in FAST position.
Push CHOKE control in.
Connect and tighten spark plug wire(s).
Clean fuel line; fill tank with clean, fresh (less than 30
days old) gasoline. Replace fuel filter, if so equipped.
Clear vent or replace cap if damaged.
Drain fuel tank. Refill with clean, fresh (less than 30
days old) gasoline.
Replace air cleaner cartridge/element or clean pre-
cleaner, if so equipped.
Fill crankcase with proper capacity and weight of oil.
Clean grass clippings and debris from around the
engine's cooling fins and blower housing.
Remove spark plug and reset the gap.
Replace spark plug. Set plug gap.
Replace air cleaner cartridge/element or clean pre-
cleaner, if so equipped.
Tighten blade and spindle. Balance blade.
Replace blade.
Perform side-to-side deck adjustment.
Sharpen or replace blade.
Check tire pressure in all four tires.
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