MAINTENANCE
WARNING: If the idle speed can- not be adjusted so that the cutting attachment stops, contact your ser- vicing dealer. Do not use the ma- chine until it has been correctly ad- justed or repaired.
Unit/Maintenance Safety
Disconnect the spark plug before perform- ing maintenance, except carburetor adjust- ments.
Muffler
CAUTION! Muffler is fitted with a catalytic converter designed to reduce harmful ex- haust gases.
The muffler is designed to reduce the noise level and to direct the exhaust gases away from the operator. The exhaust gases are hot and can contain sparks, which may cause fire if directed against dry and com- bustible material.
Mufflers are equipped with a special spark arrestor mesh. The mesh should be checked and, if necessary. cleaned by a servicing dealer. If the mesh is damaged, it should be replaced. If the mesh is fre- quently blocked, this can be a sign that the performance of the catalytic converter is impaired. Contact your servicing dealer to inspect the muffler. A blocked mesh will cause the machine to overheat and result in damage to the cylinder and piston.
Muffler bolts
Spark arrestor mesh
CAUTION! Never use a machine that has a faulty or loose muffler. Ensure the muffler bolts are tight.
WARNING: Mufflers fitted with catalytic converters get very hot during use and remain so for some time after stopping. This also ap- plies at idle speed. Contact can re- sult in burns to the skin. Remember the risk of fire!
WARNING: The inside of the muffler contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged muffler.
WARNING: Bear in mind that: Engine exhaust fumes contain car- bon monoxide, which can cause carbon monoxide poisoning. For this reason you should not start or run the machine indoors, or any- where that is poorly ventilated. The exhaust fumes from the engine are hot and may contain sparks which can start a fire. Never start the machine indoors or near com- bustible material!
Spark plug
The spark plug condition is influenced by:
SIncorrect carburetor adjustment.
SAn incorrect fuel mixture (too much or in- correct type of oil).
SA dirty air filter.
These factors cause deposits on the spark plug electrodes, which may result in operat- ing 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 0.024σ (0.6 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.
0.024σ (0.6 mm)
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