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
Spark plug
and cleaned monthly. If the
screen is damaged it should
be replaced. If the screen isThe condition of the spark
frequently blocked, this canplug is affected by:
be a sign that the function
of the catalytic converter isY An incorrect carburettor
0,5 mm
impaired. Contact yoursetting.
dealer to inspect the muffler.Y An incorrect fuel
A blocked screen will causemixture (too much or
the engine to overheatfaulty oil).
resulting in damage to theY A dirty air filter.
cylinder and piston. Also see
under OMaintenance�.These factors cause
deposits on the spark plug
NOTE!electrode that may result in
Never use a machine with a defective muffler.malfunction or starting
difficulties.
If the machine is low on power, difficult to start or runs
poorly while idling always check the spark plug first.
WARNING!
Mufflers fitted with catalytic converterIf the spark plug is dirsty, clean it and at the same time check
!
become extremely hot during use andthat the electrode gap is 0.5 mm. The spark plug should be
after stopping. This also applies at idling
changed after about one month of operation or earlier if
speeds. Contact can result in burns to
necessary.
the skin. Be observant to the risk of fire!
NOTE! Always use the recommended type of spark plug. An
incorrect spark plug can damage the cylinder/piston.
20 � English |
ACEC
