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TROUBLESHOOTING GUIDE (continued)
Symptom
Poor
acceleration.
Engine stops
abruptly.
Engine difficult
to shut off.
Excessive
vibration.
ADDITIONAL PROBLEMS
Possible Cause
Clogged air filter
element.
Clogged fuel filter.
Carburetor mixture
too lean.
Idle speed set too low.
Ignition 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.
Warped or damaged
blower fan.
Loose bolt or fastener.
Internal engine damage.
Remedy
Clean or replace the air
filter element.
Replace the fuel filter
as required.
Consult with an authorized
servicing dealer.
Adjust: 2500 (
250) rpm (min
Set the switch to "I" (ON)
and re-start.
Refuel. See page 6.
Clean or replace filter
as required.
Drain and refill with clean fresh
unleaded gasoline with a pump
octane of 87 or higher, mixed
with 50:1 Shindaiwa Premium
2-cycle mixing oil or an equivalent
high quality 2-cycle mixing oil.
Re-start.
Clean or replace spark plug;
tighten the terminal.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Test and replace
as required.
Replace the plug with a
Champion CJ8 or equivalent
spark plug of the correct heat
range. For electromagnetic
compliance (EMC) use a
NGK BMR6A resistor plug.
Adjust the spark plug electrode
gap to 0.024 inch (0.6 mm). Re-start.
Idle engine until cool.
Inspect and replace fan
as required.
Tighten as required.
Consult with an authorized
servicing dealer.
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