MAINTENANCE
MufflerCooling system
NOTE!
To maintain as low opera-
Some mufflers are fitted with a catalytic converter. See
ting temperature as possible
OTechnical data� to see whether your machine is fitted with a
the engine is equipped with
catalytic converter.
a cooling system.
The cooling system consists
The muffler is designed to
of:4
dampen the noise level and
1.An air intake on the
to direct the exhaust fumes
starter unit.
away from the user. The
2.Cooling fins on the
3
exhaust fumes are hot and
flywheel.
can contain sparks, which
3.Cooling fins on the
can result in fire if the
cylinder
exhaust fumes are directed
4.Cylinder cover (leads cold
towards a dry and
air onto the cylinder).
inflammable material. Some
mufflers are equipped with a2
Clean the cooling system
1
special spark arrest screen. If
using a brush at least once a
your machine is fitted with
week, in difficult conditions
this type of screen it should
more often.
be cleaned regularly. This is
A dirty or blocked cooling
done using a wire brush. On
system leads to the engine
mufflers without a catalytic
overheating resulting in
converter the screen should
damage to the cylinder and
be cleaned weekly, or
piston.
replaced if necessary. On
mufflers fitted with a
catalytic converter the
screen should be checked
Air filter
and cleaned monthly. If the
screen is damaged it should
The air filter should be
be replaced. If the screen is
cleaned regularly removing
frequently blocked, this can
dust and dirt to avoid:
be a sign that the function
Y carburettor malfunction
of the catalytic converter is
Y starting problems
impaired. Contact your
Y reduced engine power
dealer to inspect the muffler.
Y unnecessary wear to
A blocked screen will cause
engine parts
the engine to overheat
Y abnormal fuel
resulting in damage to the
consumption
cylinder and piston. Also see
Clean the filter after every
under OMaintenance�.
25 hours or more regularly
if operating conditions are
NOTE!
exceptionally dusty.
Never use a machine with a defective muffler.
Cleaning the air filter
Dismantle the air filter
cover and remove the air
WARNING!
filter. Wash in clean, warm
Mufflers fitted with catalytic converters
!soapy water. Ensure that the
become extremely hot during use and
after stopping. This also applies at idlingfilter is dry before refitting.
speeds. Contact can result in burns toAn air filter used for a long
the skin. Be observant to the risk of fire!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.
18 � English |