MAINTENANCE
Muffler
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 combustible material.
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.
CAUTION! The mesh must be replaced if it is damaged. If the mesh is blocked the machine will overheat and this will cause damage to the cylinder and piston. Never use a machine with a muffler that is in poor condition.
A muffler fitted with a catalytic converter greatly reduces the concentration of hydrocarbons (HC), oxides of nitrogen (NO) and aldehydes emitted with exhaust gases. However, it does not cut down carbon monoxide (CO), which you cannot smell! Consequently, never work in an enclosed or badly ventilated area. Good air circulation should always prevail when working in snowy hollows, ravines or in confined conditions.
Consequently, never work in an enclosed or badly ventilated area. Good air circulation should always prevail when working in snowy hollows, ravines or in confined conditions.
WARNING! The catalytic converter muffler
!gets very hot during and after use. This also applies during idling. Be aware of the fire hazard, especially when working near flammable substances and/or vapours.
Needle bearing lubrication
The clutch drum is fitted with one of the following drive sprockets:
ASpur sprocket (the chain sprocket is welded on the drum)
BRim sprocket (replaceable)
Both versions have a needle bearing on the drive shaft, which has to be greased regularly (once a week).
CAUTION! Use a
Adjustment of the oil pump
The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The machine is supplied from the factory with the screw set to position 2. Turning the screw clockwise will reduce the oil flow and turning the screw
| + | – |
2 | 1 |
|
3
WARNING! The engine must not be running
!when making adjustments.
Recommended settings:
Bar
Bar
Bar
Cooling system
To keep the working temperature as low as possible the machine is equipped with a cooling system.
The cooling system consists of:
5
4
3
2
1
1Air intake on the starter.
2Air guide plate.
3Fins on the flywheel.
4Cooling fins on the cylinder.
5Cylinder 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.
CAUTION! The cooling system on a chain saw with catalytic converter must be cleaned daily. This is particularly important on chain saws with catalytic converters, because the higher exhaust temperature requires efficient cooling of the engine and the catalytic converter unit.
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