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B. Periodical service points
1. Cylinder fins
Dust clogging between the cylinder fins will cause
overheating of the engine. Periodically check and
clean the cylinder fins after removing the air
cleaner and the cylinder cover. When installing the
cylinder cover, make sure that switch wires and
grommets are positioned correctly in place.
2. Fuel filter
(1) Using a wire hook, take out the filter from the
filler port.
(2) Disassemble the filter and wash with gasoline,
or replace with a new one if needed.
Note:
• After removing the filter, use a pinch to hold
the end of the suction pipe.
• When assembling the filter, take care not to
allow filter fibers or dust inside the suction
pipe.
3. Oil tank
With a wire hook, take out the oil filter through the
filler port and clean in gasoline. When putting the
filter back into the tank, make sure that it comes to
the front right corner. Also clean off dirt in the tank.
4. Spark plug
Clean the electrodes with a wire brush and reset
the gap to .025 in. as necessary.
Note:
Use a Champion RCJ-7Y or NGK BPMR7A for
replacement.
5. Sprocket
Check for cracks and for excessive wear interfering
with the chain drive. If the wearing is found
obviously, replace it with a new one. Never fit a
new chain on a worn sprocket, or a worn chain on
a new sprocket.
6. Front and Rear dampers
Replace if adhered part is peeled or crack is
observed on the rubber part.
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