Husqvarna 327LD 用户手册

20 – English

cause fire if directed against dry and combustible 
material.

Some mufflers are equipped with a special spark arrestor 
screen. If your machine has this type of muffler, you 
should clean the screen at least once a week. This is best 
done with a wire brush. On mufflers without a catalytic 
converter the screen should be cleaned weekly, or 
replaced if necessary. On mufflers fitted with a catalytic 
converter the screen should be checked, and if necessary 
cleaned, monthly. If the screen is damaged it should be 
replaced. If the screen is frequently blocked, this can be 
a sign that the performance of the catalytic converter is 
impaired. Contact your dealer to inspect the muffler. A 
blocked screen will cause the machine to overheat and 
result in damage to the cylinder and piston.

CAUTION!  Never use a machine with a defective muffler.

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 flywheel.

3

Cooling fins 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.

The spark plug condition is influenced by:

•

Incorrect carburetor adjustment.

•

An incorrect fuel mixture (too much or incorrect type 
of oil).

•

A dirty air filter.

These factors cause deposits on the spark plug 
electrodes, which may result in operating problems and 
starting difficulties.