8. Maintenance
■
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 machine 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 brushcut-
ter. Failing to do so could cause the muffler to
become overheated and that in turn could cause
the engine 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 brushcutter. Note
that it is necessary to remove the engine cover
shown in 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 brushcutter.
(1) Cylinder
(2) Intake air cooling
vent
■
MUFFLER
WARNING
•
Inspect periodically, the muffler for loose fasten-
ers, any damage or corrosion. If any sign of ex-
haust leakage is found, stop using the machine
and have it repaired immediately.
•
Note that failing to do so may result in the engine
catching on fire.
■
PROCEDURES TO BE PERFORMED AFTER
EVERY 100 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 and cyl-
inder exhaust port 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,
wipe it away using oil-free, lead-free gasoline.
■
MAINTENANCE BEFORE STORAGE
• Old fuel left in the carburetor may cause starting
failure. When a series of operation finished, make sure
to empty the fuel tank and drain the carburetor.
• Check all parts and the functions. If the failured or
damaged parts have been found, replace them with
new ones.
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