• Turn the screw out (counterclockwise) to decrease
the engine idle speed.
Fuel Filter
If idle speed adjustment is necessary, and after
Maintenance Interval
adjustment the cutting head rotates or the engine
stalls, stop using the Trimmer immediately!
The fuel filter should be replaced after every 100 hours
of operation.
Contact your local authorized MARUYAMA Dealer for
assistance and servicing.
Fuel Filter Replacement
The fuel filter is attached to the end of the fuel pick-up
hose inside the fuel tank.
Air Filter
1. Make sure the fuel tank is empty.
Maintenance Interval
2. Remove the fuel cap.
• The air filter should be cleaned daily, or more
often when working in extremely dusty conditions.
3. Using a wire hook, gently pull the fuel filter out
through the fuel filler opening.
• Replace after every 100 hours of operation.
4. Grasp the fuel hose next to the fuel filter fitting
Air Filter Cleaning
and remove the filter, but do not release the hose.
1. Loosen the knob and remove the air filter cover.
5. While still holding on to the fuel hose, attach the
new fuel filter.
2. Remove the foam element and filter screen from
the air filter body.
6. Drop the new fuel filter back into the fuel tank.
3. Clean the foam element and filter screen with
7. Make sure that the fuel filter is not stuck in a corner
warm, soapy water. Let the screen and element dry
of the tank, and that the fuel hose is not doubled
completely.
over (kinked) before refueling.
4. Apply a light coat of SAE 30 motor oil to the
foam element and squeeze out all excess oil.
5. Reassemble the filter screen, foam element and
to the air filter cover.
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Summary of Contents for B23C
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