MAINTENANCE
MufflerCooling system
NOTE!
To maintain as low operating
Some mufflers are fitted with a catalytic converter. See
temperature as possible the
OTechnical data� to see whether your machine is fitted with a
engine is equipped with a
catalytic converter.
cooling system.
The cooling system consists
The muffler is designed to
of:4
dampen the noise level and
1.An air intake on the starter
to direct the exhaust fumes
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 mixture
A blocked screen will cause(too much or faulty oil).
the engine to overheatY A dirty air filter.
resulting in damage to the
cylinder and piston. Also seeThese factors cause deposits
under OMaintenance�.on the spark plug electrode
that may result in
NOTE!malfunction or starting
Never use a machine with a defective muffler.difficulties.
If the machine is low on power, difficult to start or runs
poorly while idling always check the spark plug first.
WARNING!If the spark plug is dirty, clean it and at the same time check
Mufflers fitted with catalytic convertersthat the electrode gap is 0.5 mm. The spark plug should be
!
become extremely hot during use andchanged after about one month of operation or earlier if
after stopping. This also applies at idling
necessary.
speeds. Contact can result in burns to
NOTE! Always use the recommended type of spark plug. An
the skin. Be observant to the risk of fire!
incorrect spark plug can damage the cylinder/piston.
20 � English |
ACEC
HUSQVARNA
