24
6
WARNING
Trouble-
shooting
WARNING: Before
performing any type
of maintenance on the
machine, wait for all
parts to stop moving, and
disconnect the spark plug
wire. Remove the igni-
tion key from the ignition
switch. Failure to follow
this instruction could
result in personal injury
or property damage.
For repairs beyond the
minor adjustments listed
here, contact an autho-
rized service dealer.
Troubleshooting
Problem Cause Remedy
Engine fails to start Choke not activated
Throttle/choke control not in correct
position
Spark plug wire disconnected
Faulty spark plug
Fuel tank empty or stale fuel
Battery or charging malfunction
1.
2.
3.
4.
5.
6.
Place throttle/choke control lever into choke
position.
Place throttle/choke lever into fast position.
Connect wires to spark plug.
Clean, adjust gap, or replace.
Fill tank with clean, fresh gasoline.
Check fuse and battery.
1.
2.
3.
4.
5.
6.
Engine runs erratically Unit running with choke applied
Spark plug wire loose
Blocked fuel line or stale fuel
Water or dirt in fuel system
Dirty air cleaner
1.
2.
3.
4.
5.
Move throttle/choke lever out of choke position.
Connect and tighten spark plug wire.
Clean fuel line. Fill tank with fresh gasoline.
Drain fuel. Refill with fresh fuel.
Replace air cleaner cartridge.
1.
2.
3.
4.
5.
Engine overheats Engine oil level low
Air flow restricted
1.
2.
Fill engine with proper amount and type of oil.
Clean grass clippings and debris from around
the engine’s cooling fins and blower housing.
1.
2.
Engine hesitates at
high RPMs
Spark plug gap set too close1. Remove spark plug and adjust gap.1.
Engine idles poorly Fouled spark plug
Dirty air cleaner
1.
2.
Replace spark plug and adjust gap.
Replace air cleaner cartridge.
1.
2.
Excessive vibration Cutting blades loose or unbalanced
Damaged, dull, or bent cutting blade
Loose hardware
1.
2.
3.
Tighten blade and spindle. Balance blade.
Replace blade.
Tighten all nuts and bolts.
1.
2.
3.
Unit fails to propel itself Drive belt loose or damaged1. Replace drive belt.1.
Poor mowing
performance
Dull blade(s)
Broken, loose, or worn belt(s)
Blade(s) out of balance
1.
2.
3.
Sharpen or replace blade(s).
Replace belt(s).
Balance or replace blade(s).
1.
2.
3.
WARNING: 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 prevent unintended starting. Always wear safety glasses during
operation or while performing any adjustments or repairs.
For repairs beyond the minor adjustments listed here, contact an authorized service dealer.
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