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8. Maintenance
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.
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
•Inspect periodically, the muffler for loose
fasteners, any damage or corrosion. If any sign of
exhaust 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
cylinder 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.
WARNING
IMPORTANT
■ 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.
■ MAINTENANCE BEFORE LONG-TERM STORAGE
This machine is highly inflammable.
• When you take fuel out, keep the fuel tank well
away from flames.
•Be careful not to spill the fuel, and completely
wipe off all fuel spills.
• If you will not use the machine for a long time (two
months or more), take out the fuel from the fuel tank
and carburetor. If you leave the fuel tank and
carburetor filled with fuel for a long time, the fuel
might deteriorate and clog the inside of the
carburetor, thus causing engine problems (such as
wrong start or insufficient output).
•When storing the machine for a long time, loosen the
cap of the fuel tank slightly. Excessive tightening of
the cap might deform its packing over time.
1. Brush off dirt from the machine, and check the
damage or slack of each part. If you find any
abnormal part, repair it completely ready for the next
time the machine is used.
2. Extract fuel from the fuel tank, switch on the engine,
and leave it running until it stops naturally.
3. Remove the spark plug, and pour 1 to 2 ml of 2-cycle
oil into the engine. Draw the starter rope two to three
times, set the plug back, and stop it at the contraction
position.
4. Supply some grease to the gear case, and apply anti-
rust oil to the metal parts such as the throttle wire.
5. Apply a little oil to the blade, put the cover on the
blade, and keep the machine in a safe place away
from heat and humidity.
IMPORTANT
WARNING
MA6
MA7