MAINTENANCE
Muffler
NOTE!
Some mufflers are fitted with a catalytic converter. See “Technical data” to see whether you clearing saw is fitted with a catalytic converter.
The muffler is designed to dampen the noise level and to direct the exhaust fumes away from the user. The exhaust fumes are hot and can contain sparks, which can result in fire if the exhaust fumes are directed towards a dry and inflammable material. Some mufflers are equipped with a special spark arrest screen. If your machine is fitted with this type of screen it should be cleaned regularly. This is done using 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 cleaned monthly. If the screen is damaged it should be replaced. If the screen is frequently blocked, this can be a sign that the function of the catalytic converter is impaired. Contact your dealer to inspect the muffler. A blocked screen will cause the engine to overheat resulting in damage to the cylinder and piston. Also see under “Maintenance”.
NOTE!
Never use a machine with a defective muffler.
Cooling system
The engine is equipped with a cooling system for maintaining the right operating temperature.
The cooling system consists of the following components:
1.Air intake on the starter device.
2.Fan blades on the flywheel.
3.Cooling fins on the cylinder.
4.Cylinder cowling (guides cooling air flow against cylinder surfaces).
Clean the cooling system by brushing once a week, or more often, if necessary.
A dirty or blocked cooling system will cause the blower to overheat and this will damage the cylinder and piston.
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