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 you clearing saw is fitted with a
the engine is equipped with
catalytic converter.
a cooling system.
The muffler is designed to
The cooling system consists4
dampen the noise level and
of:
to direct the exhaust fumes3
1.An air intake on the
away from the user. The
starter unit.2
exhaust fumes are hot and
2.Cooling fins on the
can contain sparks, which
flywheel.
can result in fire if the
3.Cooling fins on the
exhaust fumes are directed
cylinder1
towards a dry and
4.Cylinder cover (leads cold
inflammable material. Some
air onto the cylinder).
mufflers are equipped with a
special spark arrest screen. If
Clean the cooling system
your machine is fitted with
using a brush at least once a
this type of screen it should
week, in difficult conditions
be cleaned regularly. This is
more often.
done using a wire brush. On
A dirty or blocked cooling
mufflers without a catalytic
system leads to the engine
converter the screen should
overheating resulting in
be cleaned weekly, or
damage to the cylinder and
replaced if necessary. On
piston.
mufflers fitted with a
catalytic converter the
screen should be checked
Angle gear
and cleaned monthly. If the
screen is damaged it should
be replaced. If the screen isThe angle gear is filled
frequently blocked, this canwith a sufficient quantity
be a sign that the functionof grease at the factory.
of the catalytic converter isHowever, before using the
impaired. Contact yourmachine you should check
dealer to inspect the muffler.that the angle gear is filled
A blocked screen will causeto 3/4 with grease. Use
the engine to overheatHUSQVARNA special
resulting in damage to thegrease.
cylinder and piston. Also see
under OMaintenance�.Normally, the grease does
not need to be changed
NOTE!except when the angle gear
Never use a machine with ais repaired.
defective muffler.
Two-part shaft
WARNING!
Mufflers fitted with catalytic converters
!The end of the drive axle in
become extremely hot during use and
after stopping. This also applies at idlingthe lower shaft should be
speeds. Contact can result in burns tolubricated with grease every
the skin. Be observant to the risk of fire!30 hours. There is a risk that
the drive axle ends (splined
coupling) on two-part shafts
jam if they are not lubricated
regularly.
26 � English |
ACEC
