Husqvarna 324HDA55 Trimmer User Manual


 
18 – English
MAINTENANCE
Cooling system
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
1 Air intake on the starter.
2 Fins on the ywheel.
3 Cooling ns on the cylinder.
4 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.
Spark plug
The spark plug condition is inuenced by:
Incorrect carburetor adjustment.
A dirty air lter.
These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difculties.
If the machine is low on power, difcult to start or runs poorly
at idle speed: always check the spark plug rst before taking
any further action. If the spark plug is dirty, clean it and check
that the electrode gap is 0,6-0,7 mm. The spark plug should
be replaced after about a month in operation or earlier if
necessary.
CAUTION! Always use the recommended spark plug type!
Use of the wrong spark plug can damage the piston/cylinder.
Check that the spark plug is tted with a suppressor.
Air lter
The air lter must be regularly cleaned to remove dust and dirt
in order to avoid:
Carburettor malfunctions
Starting problems
Loss of engine power
Unnecessary wear to engine parts
Excessive fuel consumption.
Clean the lter every 25 hours, or more regularly if conditions
are exceptionally dusty.
Cleaning the air lter
Remove the air lter cover and take out the lter. Wash it
clean in warm, soapy water.
Ensure that the lter is dry before retting it.
An air lter that has been in use for a long time cannot be
cleaned completely. The lter must therefore be replaced with
a new one at regular intervals. A damaged air lter must
always be replaced.
If the machine is used in dusty conditions the air lter should
be soaked in oil. See instructions under the heading Oiling the
air lter.