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Muffler
The muffler is designed in
order to reduce the noise level
and to direct the exhaust
gases away from the operator.
The exhaust gases are hot
and can contain sparks, which
may cause fire if directed
against dry and combustible
material. The muffler is
equipped with a spark arrestor
mesh. The mesh must be
cleaned at least once a week.
This is done with a wire brush.
CAUTION! The spark arrestor
mesh must be replaced, if
damaged. The saw will be
overheated, if the mesh is
clogged. This results in
damage on the cylinder and
the piston. Never use a saw
with a clogged or defective
muffler.
MAINTENANCE
Air filter
The air filter must be regularly cleaned from dust and dirt in
order to avoid:
• Carburetor malfunctions
• Starting problems
• Engine power reduction
• Unnecessary wear on
the engine parts
• Abnormal fuel consumption
Clean the air filter daily or
more often if the air is
exceptionally dusty in the
working area.
• Disassemble the air filter by
removing its cover and take
out the filter. When
reassembling, make sure
that the filter is tight against
the filter holder. Clean the
filter by brushing or shaking
it.
• A more thorough cleaning of
the filter is obtained by
washing it in water and
soap.
An air filter, which is used for some time, cannot be cleaned
completely. Therefore it must be replaced by a new one, with
regular intervals.
IMPORTANT! A damaged air filter must always be replaced.
Spark plug
The spark plug condition is
influenced by:
• An incorrect carburetor
setting.
• Wrong fuel mixture (too
much oil in the gasoline).
• A dirty air filter.
These factors cause deposits
on the spark plug electrodes,
which may result in
malfunction and starting
difficulties.
If the engine is low on
power, difficult to start or
runs poorly at idling speed,
always check the spark plug
first. If the spark plug is dirty,
clean it and check the
electrode gap. Readjust if
necessary. The correct gap is
0,5 mm (.02"). The spark plug
should be replaced after about
a month in operation or earlier
if the electrodes are badly
eroded.
IMPORTANT! Always use the recommended spark plug type.
An incorrect spark plug can severely damage the piston/
cylinder.
0,5 mm