MAINTENANCE
Muf�erCooling system
CAUTION! Some muf�ers are Ţtted with a catalytic To keep the working temperature as low as possible the
converter. See chapter on Technical data to see whether your machine is equipped with a cooling system.
machine is Ţtted with a catalytic converter.
The muf�er is designed to reduce the noise level and to direct 4
the exhaust gases away from the operator. The exhaust
gases are hot and can contain sparks, which may cause Ţre 3
if directed against dry and combustible material.2
1
The cooling system consists of:
1 Air intake on the starter.
2 Fins on the �ywheel.
Some muf�ers are equipped with a special spark arrestor 3 Cooling Ţns on the cylinder.
mesh. If your machine has this type of muf�er, you should
clean the mesh at least once a week. This is best done with a 4 Cylinder cover (directs cold air over the cylinder).
wire brush. On muf�ers without a catalytic converter the mesh Clean the cooling system with a brush once a week, more
should be cleaned weekly, or replaced if necessary. On often in demanding conditions. A dirty or blocked cooling
muf�ers Ţtted with a catalytic converter the mesh should be system results in the machine overheating which causes
checked, and if necessary cleaned, monthly. If the mesh is damage to the piston and cylinder.
damaged it should be replaced. If the mesh is frequently
blocked, this can be a sign that the performance of the
catalytic converter is impaired. Contact your dealer to inspect Bevel gear
the muf�er. A blocked mesh will cause the machine to
overheat and result in damage to the cylinder and piston.The bevel gear is Ţlled with the right quantity of grease at the
factory. However, before using the machine you should check
that the bevel gear is Ţlled three-quarters full with grease. Use
HUSQVARNA special grease.
CAUTION! Never use a machine with a defective muf�er.
The grease in the bevel gear does not normally need to be
changed except if repairs are carried out.WARNING! Muf�ers Ţtted with catalytic
!converters get very hot during use and
remain so for some time after stopping. This
also applies at idle speed. Contact can result
in burns to the skin. Remember the risk of
Å¢re!
26 � English |
ACEC
