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Troubleshooting Guide (continued)
Symptom
Poor acceleration.
Engine stops abruptly.
Engine difficult to shut off.
Cutting attachment moves at
engine idle.
Excessive vibration.
Cutting attachment will not move.
ADDITIONAL PROBLEMS
Possible Cause
Clogged air cleaner element.
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 attachment.
Loose gearcase.
Bent main shaft/worn or damaged bushings.
Shaft not installed in powerhead, coupler or
gearcase.
Broken Shaft.
Damaged gearcase.
Remedy
Clean the air cleaner element.
Replace the fuel filter.
Consult with an authorized servicing dealer.
Adjust: 2,750 (±250) RPM (min
).
-1
Reset the switch and restart.
Refuel.
Replace fuel filter.
Refill with fresh, clean unleaded gasoline with a pump
octane of 87 or higher mixed with a 2-cycle air cooled
mixing oil that meets or exceeds ISO-L-EGD and/or
JASO FC classified oils at 50:1 gasoline/oil ratio.
Clean or replace spark plug, tighten the terminal.
Consult with an authorized servicing dealer.
Test and replace as required.
Replace the spark plug with an Champion CJ8 or
equivalent spark plug of the correct heat range.
Adjust the spark plug to 0.024-inch (0.6 mm).
Idle engine until cool.
Refer to page 14 (Overheated Engine).
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.
).
15
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