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English – 21
MAINTENANCE
Cooling system
To maintain as low an
operating temperature as
possible the engine is
equipped with a cooling
system.
The cooling system consists
of:
1.An air intake on the starter
unit.
2.Cooling fins on the
flywheel.
3.Cooling fins on the
cylinder
4.Cylinder cover (leads cold
air onto the cylinder).
Clean the cooling system
using a brush at least once a
week, in difficult conditions
more often.
A dirty or blocked cooling
system leads to the engine
overheating resulting in
damage to the cylinder and
piston.
NOTE!
Some mufflers are fitted with a catalytic converter. See
“Technical data” to see whether you clearing saw is fitted with a
catalytic converter.
The muffler is designed to
dampen the noise level and
to direct the exhaust fumes
away from the user. The
exhaust fumes are hot and
can contain sparks, which
can result in fire if the
exhaust fumes are directed
towards a dry and
inflammable material. Some
mufflers are equipped with a
special spark arrest screen. If
your machine is fitted with
this type of screen it should
be cleaned regularly. This is
done using a wire brush. On
mufflers without a catalytic
converter the screen should
be cleaned weekly, or
replaced if necessary. On
mufflers fitted with a
catalytic converter the screen
should be checked and
cleaned monthly. If the
screen is damaged it should
be replaced. If the screen is
frequently blocked, this can
be a sign that the function of
the catalytic converter is
impaired. Contact your
dealer to inspect the muffler.
A blocked screen will cause
the engine to overheat
resulting in damage to the
cylinder and piston. Also see
under “Maintenance”.
NOTE! Never use a machine
with a defective muffler.
!
WARNING!
Mufflers fitted with catalytic converters
become extremely hot during use and
after stopping. This also applies at idling
speeds. Contact can result in burns to
the skin. Be observant to the risk of fire!
Air filter
The air filter should be
cleaned regularly removing
dust and dirt to avoid:
• carburettor malfunction
• starting problems
• reduced engine power
• unnecessary wear to engine
parts
• abnormal fuel
consumption
Clean the filter after every 25
hours or more regularly if
operating conditions are
exceptionally dusty.
Cleaning the air filter
Dismantle the air filter cover
and remove the air filter.
Wash in clean, warm soapy
water. Ensure that the filter is
dry before refitting. An air
filter used for a long period
of time can never be cleaned
completely. Therefore it is
necessary to replace the filter
from time to time with a new
filter. A damaged air filter
must always be replaced.
Muffler
4
3
2
1