US-16
PSZ2450S
9. Maintenance
MA15
(1)
(2)
MA14
TIGHTENING TORQUE:
87–121 (in-lbs)
(9.8–13.7 N.m.)
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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.
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SPARK ARRESTER (MA12)
• The muffler is equipped with a spark
arrester to prevent red hot carbon from
flying out of the exhaust outlet.
Periodically inspect and clean as
necessary with a wire brush.
In the State of California it is required
by law (Section 4442 of the California
Public Resources Code) to equip a
spark arrester when a gas powered tool
is used in any forest covered, brush
covered, or grass covered unimproved
land.
(1) Spark arrester
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GEAR CASE (MA13)
The reduction gears are lubricated by
multipurpose, lithium-based grease in the
gearcase.
Supply new grease every 25 hours of use
or more often depending on the job
condition.
When adding lubricant, use a grease gun
to insert lubricant into the three grease
nipples located on the gear case.
(1) Grease fitting
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INTAKE AIR COOLING VENT
• 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,
WARNING
WARNING
check the area around the muffler
and remove any wood chips or
leaves which have attached
themselves to the brushcutter.
Failing to do so could cause the
muffler to become overheated, and
that this 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 (MA14) 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. (MA14)
(1) cylinder
(2) intake air cooling vent (back)
■
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.
IMPORTANT
(1)
MA12
MA13