MAINTENANCE
Air filter
The air filter must be regularly cleaned from dust and dirt in order to avoid:
• | Carburettor malfunctions | 61 | |||
• | Starting problems |
| |||
• | Engine power reduction |
| |||
• | Unnecessary wear on |
| |||
| the engine parts |
| |||
• | Abnormal fuel consumption |
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Clean the air filter daily or more often if the air is exceptionally dusty in the working area.
• Disassemble the air filter by |
|
removing the cylinder cover |
|
and unscrew the filter. |
|
When reassembling, make |
|
sure that the filter is tight |
|
against the filter holder. |
|
Clean the filter by brushing | 268, 272XP |
or shaking it. |
•A more thorough cleaning of the filter is obtained by washing it in water and
soap.
An air filter, which is used for some time, cannot be cleaned completely. Therefore it must be replaced by a new one, with regular intervals.
IMPORTANT! A damaged air filter must always be replaced.
Spark plug
0,5 mm
The spark plug condition is influenced by:
• An incorrect carburettor setting.
•Wrong fuel mixture (too much oil in the gasoline).
•A dirty air filter.
These factors cause deposits on the spark plug electrodes, which may result in malfunction and starting difficulties. If the engine is low on power, difficult to start or runs poorly at idling speed, always check the spark plug first.
If the spark plug is dirty, clean it and check the electrode gap. Readjust if necessary. The correct gap is 0.5 mm (0.020"). The spark plug should be replaced after about a month in operation or earlier if the electrodes are badly eroded.
IMPORTANT! Always use the recommended spark plug type. An incorrect spark plug can severely damage the piston/ cylinder.
Muffler
The muffler is designed in order 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 screen. If your saw has this type of muffler, you should clean the screen at least once a week. This is done with a wire brush.
CAUTION! The screen must be replaced, if damaged. The saw will be overheated, if the screen is clogged. This results in damage on the cylinder and the piston. Never use a saw with a clogged or defective muffler.
Adjusting the oil pump
The oil pump can be adjusted to give four different oil flow rates. To adjust the flow rate, first remove the chain, bar, clutch cover, centrifugal clutch and the clutch drum. Using a screwdriver, adjust the oil flow rate by turning the adjuster screw one way or the other. The projection on the screw should point towards the chosen setting. The diagram shows the setting for flow rate 2.
Recommended settings:
13" and 15" bars | Setting 2 |
18" bars and longer | Setting |
NOTE! Do not carry out this adjustment with the engine running!
English – 31
