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This section addresses minor service issues.
IMPORTANT: Before performing any troubleshooting, make sure: transmission is in Neutral, Neutral latches are locked on
the control levers, blade clutch is disengaged and in the “OFF” position.
Problem Cause Remedy
Engine fails to start 1. Choke not activated
2. Throttle/choke control not in correct position
3. Spark plug wire disconnected
4. Faulty spark plug
5. Fuel tank empty or stale fuel
6. Blocked fuel line
1. Place throttle/choke control lever into choke position..
2. Place throttle/choke lever into fast position.
3. Connect wires to spark plug.
4. Clean, adjust gap, or replace.
5. Fill tank with clean, fresh gasoline.
6. Clean the fuel line.
Engine runs
erratically
1. Unit running with choke applied
2. Spark plug wire loose
3. Stale fuel.
4. Water or dirt in fuel system.
5. Dirty air cleaner
1. Move throttle/choke lever out of choke position.
2. Connect and tighten spark plug wire.
3. Fill tank with fresh gasoline.
4. Drain fuel. Refill with fresh fuel.
5. Replace air cleaner cartridge.
Engine overheats 1. Engine oil level low
2. Air flow restricted
1. Fill engine with proper amount and type of oil.
2. Clean grass clippings and debris from around the
engine’s cooling fins and blower housing.
Engine hesitates at
high RPM’s
1. Spark plug gap set too close 1. Remove spark plug and adjust gap
Engine idles poorly 1. Fouled spark plug
2. Dirty air cleaner
1. Replace spark plug and adjust gap.
2. Replace air cleaner cartridge.
Excessive vibration 1. Cutting blades loose or unbalanced
2. Damaged, dull, or bent cutting blade
3. Loose hardware
1. Tighten blade and spindle. Balance blade.
2. Replace blade.
3. Tighten all nuts and bolts.
Unit fails to propel
itself
1. Drive belts loose or damaged 1. Replace drive belt.
Poor mowing
performance
1. Dull blade(s)
2. Broken, loose, or worn belt(s)
3. Blade(s) out of balance
1. Sharpen or replace blade(s).
2. Replace belt(s).
3. Balance or replace blade(s).
Before performing any type of maintenance/service, disengage all
controls and stop the engine. Wait until all moving parts have come
to a complete stop.
Disconnect spark plug wire and ground it against the engine to pre-
vent unintended starting. Always wear safety glasses during opera-
tion or while performing any adjustments or repairs.
WARNING
TROUBLESHOOTING