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Troubleshooting Guide (continued)
Symptom
Poor acceleration.
Engine stops abruptly.
Engine difficult to shut off.
Cutting attachment rotates at
engine idle.
Excessive vibration.
Cutting attachment will
not rotate.
18
ADDITIONAL PROBLEMS
Possible Cause
Clogged air filter.
Clogged fuel filter.
Lean fuel/air mixture.
Idle speed set too low.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or loose terminal.
Ignition failure.
Piston seizure.
Ground (stop) wire is disconnected,
or switch is defective.
Overheating due to incorrect spark plug.
Overheated engine.
Engine idle too high.
Broken clutch spring or worn clutch spring boss.
Loose attachment holder.
Warped or damaged cutting attachment.
Loose gearcase.
Bent main shaft/worn or damaged bushings.
Shaft not installed in powerhead or gearcase.
Broken shaft.
Damaged gearcase.
Remedy
Clean or replace the air filter.
Replace the fuel filter.
Consult with an authorized servicing dealer.
Adjust: 2,750 (±250) RPM (min
).
-1
Reset the switch and restart.
Refuel. See page 9.
Replace filter.
Drain; replace with clean fuel. See page 9.
Clean or replace spark plug with a Champion CJ8 or
equivalent type spark plug of the correct heat range.
Restart. Tighten the terminal.
Replace the ignition unit.
Consult with an authorized servicing dealer.
Test and replace as required.
Replace spark plug with a Champion CJ8 or equivalent
type spark plug of the correct heat range.
Idle engine until cool.
Set idle: 2,750 (±250) RPM (min
).
-1
Replace spring/shoes as required, check idle speed.
Inspect and re-tighten holders securely.
Inspect and replace attachment as required.
Tighten gearcase securely.
Inspect and replace as necessary.
Inspect and reinstall as required.
Consult with an authorized servicing dealer.
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