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TROUBLESHOOTING
Problem
Possible Cause
Solution
Engine does not start
Spark plug wire disconnected
Engine not primed
Defective or incorrectly gapped spark plug
Fuel tank empty or low
Dirty carburetor or fuel line
Carburetor dirty
Engine flooded
Throttle control lever in incorrect position
Stale gasoline
Defective throttle control lever or wire
Dirty air filter
Connect spark plug.
Prime engine.
Inspect or replace spark plug.
Add fuel.
Clean carburetor or fuel line.
For carburetor cleaning, take the unit to an
Authorized Service Center.
Wait several minutes before starting.
Move throttle lever to FAST or START position.
Drain old gasoline and add fresh gasoline.
Inspect lever and wire. Replace if damaged or defective.
Replace air filter.
Engine runs poorly
Bad spark plug
Dirty air filter
Carburetor out of adjustment
Stale gasoline
Replace spark plug.
Replace air filter.
Adjust carburetor. Take the unit to an authorized
Service Center.
Drain old gasoline and add fresh gasoline.
Engine overheats
Engine cooling system clogged
Engine cooling system clogged
Carburetor out of adjustment
Oil level is low.
Clean engine screen and cooling fins.
Clean debris system and engine cooling fins.
Adjust carburetor. Take the unit to an authorized
Service Center.
Add oil.
Engine will not stop
running
Defective throttle control lever or wire.
Throttle not adjusted properly.
Inspect and replace damaged parts.
Move throttle to the full OFF position.
Poor trimming
performance
Trimmer line length is too short
Engine not set at FAST speed
Correct line length is 21.5 inches. When less
than 1/2 this length, replace the line.
Move engine throttle lever to FAST position.
