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15
Troubleshooting Guide (continued)
ADDITIONAL PROBLEMS
Poor acceleration.
Clogged air lter.
Clogged fuel lter.
Lean fuel/air mixture.
Idle speed set too low.
Ignition switch turned off.
Fuel tank empty.
Clogged fuel lter.
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.
Debris build-up in impeller.
Loose or damaged impeller.
Loose or damaged engine mounts.
Blower intake or discharge ports or tubes
are clogged with debris.
Impeller blades are missing or damaged.
Clean the air lter.
Replace the fuel lter.
Consult with an authorized
servicing dealer.
Adjust: 3000 (±300) min
-1
(rpm).
Reset the switch and re-start.
Refuel. See page 7.
Replace fuel lter.
Drain; replace with clean fuel.
See page 7.
Clean or replace spark plug, tighten
the terminal.
Replace the ignition unit.
Consult with an authorized
servicing dealer.
Test and replace as required.
Idle engine until cool. Clean and regap
the plug to 0.6 mm (0.024 in.). Correct plug:
NGK CMR5H or equivalent resistor type
spark plug of the correct range.
Idle engine until cool.
Clean debris from impeller as required.
Inspect and replace impeller as required.
Tighten or replace engine mounts as
required.
Inspect and remove debris.
Consult with an authorized
servicing dealer.
Symptom Possible Cause Remedy
Engine stops abruptly.
Engine difcult to shut off.
Excessive vibration.
Engine overspeeding.