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© 2014 ICS, Blount International Inc. Specications are subject to change
without notice. REV061914 F/N 545067
SPARK PLUG
• A worn or fouled spark plug can cause a loss of power, difficulty starting
or rough idle.
• If the spark plug is dirty, clean
it with a wire brush and check
the electrode gap. Readjust if
necessary.
The correct gap is .020 in (0.5
mm).
• The spark plug should be replaced
after 40 hours of operation or
earlier if the electrode is badly
corroded.
• Always use the recommended spark plug type. Using the wrong spark
plug can severely damage the piston and cylinder (NGK #BPMR7A or
Champion RCJ6Y).
MAINTENANCE
CARBURETOR
• The function of the carburetor is to mix fuel with air. Adjustments other
than idle speed should only be made
by a servicing dealer.
• Before adjusting the engine idle
speed, make sure the air filter is
clean and the engine is warmed up.
Idle Screw is adjusted so that the
engine idles smoothly but the clutch
does not engage.
• If saw has been running
satisfactorily and there is a gradual
decrease in power and drop in RPM
at full throttle, the filter may have
become dirty or saturated with water.
Carburetor idle screw
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