To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
Air intake on the starter.
Cooling ﬁns on the cylinder.
Cylinder cover (directs cold air over the cylinder).
Clean the cooling system with a brush once a week, more
often in demanding conditions. A dirty or blocked cooling
system results in the machine overheating which causes
damage to the piston and cylinder.
The bevel gear is ﬁlled with the right quantity of grease at
the factory. However, before using the machine you
should check that the bevel gear is ﬁlled three-quarters
full with grease. Use HUSQVARNA special grease.
The grease in the bevel gear does not normally need to
be changed except if repairs are carried out.
The air ﬁlter must be regularly cleaned to remove dust
and dirt in order to avoid:
Loss of engine power.
22 – English
Clean the ﬁlter every 25 hours, or more regularly if
conditions are exceptionally dusty.
Cleaning the air ﬁlter
Remove the air ﬁlter cover and take out the ﬁlter. Wash it
clean in warm, soapy water. Ensure that the ﬁlter is dry
before reﬁtting it.
An air ﬁlter that has been in use for a long time cannot be
cleaned completely. The ﬁlter must therefore be replaced
with a new one at regular intervals. A damaged air ﬁlter
must always be replaced.
If the machine is used in dusty conditions the air ﬁlter
should be soaked in oil. See instructions under the
heading Oiling the air ﬁlter.
Oiling the air ﬁlter
Always use special ﬁlter oil. Filter oil contains a solvent to
make it spread evenly through the ﬁlter. You should
therefore avoid skin contact.
Put the ﬁlter in a plastic bag and pour the ﬁlter oil over it.
Knead the plastic bag to distribute the oil. Squeeze the
excess oil out of the ﬁlter inside the plastic bag and pour
off the excess before ﬁtting the ﬁlter to the machine. Never
use common engine oil. This would drain through the ﬁlter
quite quickly and collect in the bottom.
Unnecessary wear to engine parts
Excessive fuel consumption.