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Troubleshooting Guide (Continued)
Symptom
Poor
acceleration.
Engine stops
abruptly.
Engine difficult
to shut off.
Cutting
attachment
moves at
engine idle.
Engine will not
idle down.
Attachment will
not rotate
Excessive
vibration
20
Additional Problems
Possible Cause
Remedy
Clogged air filter.
Clean or replace the air filter.
Clogged fuel filter.
Replace the fuel filter.
Lean fuel/air
Consult with an authorized
mixture.
servicing dealer.
Idle speed set too low.
Adjust: 2,500 min
Switch turned off.
Reset the switch and re-start.
Fuel tank empty.
Refuel. See page 10.
Clogged fuel filter.
Replace fuel filter.
Water in the fuel.
Drain; replace with clean fuel.
See page 10.
Shorted spark plug or
Clean or replace spark plug with
a NGK BMR6A. Tighten the terminal.
loose terminal.
Ignition failure.
Replace the ignition unit.
Piston seizure.
Consult with an authorized
servicing dealer.
Ground (stop) wire is
Test and replace
disconnected, or
as required.
switch is defective.
Overheating due to
Replace spark plug with a NGK BMR6A.
incorrect spark plug.
Overheated engine.
Idle engine until cool.
Set idle: 2,500 min
Engine idle too high.
Replace spring/shoes as
Broken clutch spring
required, check idle speed.
or worn clutch spring
boss.
Inspect and re-tighten
Loose attachment
holders securely.
holder.
Engine idle set too high.
Set idle: 2,500 min
Engine has an air leak.
Consult with an authorized
servicing dealer.
Shaft not installed
Inspect and reinstall
in powerhead or
gearcase.
Broken shaft.
Consult with an authorized
Damaged gearcase.
Consult with an authorized
Warped or damaged
Inspect and replace
attachment.
Loose gearcase.
Tighten gearcase securely.
Bent main shaft/worn
Inspect and replace
or damaged bushings.
Trimmer line not wound
Rewind trimmer line.
properly on spool.
-1
(± 250 min
-1
(± 250 min
-1
(± 250 min
as required.
servicing dealer.
servicing dealer.
attachment as required.
as necessary.
-1
)
-1
)
-1
)
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