Husqvarna 525RXT 用户手册

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26 – English
Some mufflers are equipped with a special spark arrestor 
mesh. If your machine has this type of muffler, you should 
clean the mesh at least once a week. This is best done 
with a wire brush. On mufflers without a catalytic 
converter the mesh should be cleaned weekly, or 
replaced if necessary. On mufflers fitted with a catalytic 
converter the mesh should be checked, and if necessary 
cleaned, monthly. If the mesh is 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 the muffler. A 
blocked mesh will cause the machine to overheat and 
result in damage to the cylinder and piston.
CAUTION!  Never use a machine with a defective muffler.
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 flywheel.
3
Cooling fins on the cylinder.
4
Cylinder cover (directs cold air over the cylinder).
5
Muffler cover
6
Muffler plate
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 influenced by:
Incorrect carburettor 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.
If the machine is low on power, difficult to start or runs 
poorly at idle speed: always check the spark plug first 
before taking any further action. If the spark plug is dirty, 
clean it and check that the electrode gap is 0,65 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 fitted with a 
suppressor.
!
WARNING! Mufflers fitted 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 fire!
0,65