Maintenance
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■ INTAKE AIR COOLING VENT
WARNING
• Never touch the cylinder, muffler, or spark
plugs with your bare hands immediately after
stopping the engine. The engine can become
very hot when in operation, and doing so could
result in severe burns.
• When checking the brush cutter to make
sure that it is okay before using it, check the
area around the muffler and remove any wood
chips or leaves which have attached themselves
to the brush cutter. Note that failing to do so
could cause the muffler to become overheated,
and that this in turn could cause the brush
cutter to catch on fire. Always make sure that
the muffler is clean and free of wood chips,
leaves, and other waste before use.
• Check the intake air cooling vent and the
area around the cylinder cooling fins after every
25 hours of use for blockage, and remove any
waste which has attached itself to the brush
cutter. Note that it is necessary to remove the
plug guard shown in Figure in order to be able to
view the upper part of the cylinder.
IMPORTANT
• If waste gets stuck and causes blockage
around the intake air cooling vent or between
the cylinder fins, it may cause the engine to
overheat, and that in turn may cause mechanical
failure on the part of the brush cutter. (MA6)
(1) Cylinder fin
(2) Intake air cooling vent (back)
■ PROCEDURES TO BE PERFORMED AFTER
EVERY 10 HOURS OF USE
1. Remove the muffler, insert a screwdriver into
the vent, and wipe away any carbon buildup.
Wipe away any carbon buildup on the muffler
exhaust vent at the same time.
2. Tighten all screws, bolts, and fittings.
3. Check to see if any oil or grease has worked its
way in between the clutch lining and drum, and
if it has wiped it away using oil-free, lead-free
gasoline.
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