MAINTENANCE
Air filterMuffler
The air filter must be regularly cleaned from dust and dirt in
order to avoid:
Y Carburettor malfunctions
Y Starting problems254, 257The muffler is designed in
Y Engine power reductionorder to reduce the noise level
Y Unnecessary wear onand to direct the exhaust
the engine partsgases away from the operator.
Y Abnormal fuel consumptionThe exhaust gases are hot
and can contain sparks, which
may cause fire if directed
against dry and combustible
material. Some mufflers are
Clean the air filter daily orequipped with a special
more often if the air isscreen. If your saw has this
exceptionally dusty in thetype of muffler, you should
working area.clean the screen at least once
a week. This is done with a
wire brush.Y Disassemble the air filter by
removing the cylinder cover
and unscrew the filter.CAUTION! The screen must be replaced, if damaged. The saw
When reassembling, makewill be overheated, if the screen is clogged. This results in
sure that the filter is tightdamage on the cylinder and the piston. Never use a saw with a262
against the filter holder.clogged or defective muffler.
Clean the filter by brushing
or shaking it.
Y A more thorough cleaning of
the filter is obtained byAdjustment of the oil pump
washing it in water and
soap.
An air filter, which is used for
some time, cannot be cleanedThe oil pump is adjustable.
Adjustments are made by
completely. Therefore it mustturning the screw using a
be replaced by a new one,
screwdriver or combination
with regular intervals.spanner. The saw is supplied
IMPORTANT! A damaged air
from the factory set to 1 turn
filter must always beopen. Turning the screw
replaced.clockwise will reduce the oil
flow and turning the screw
anti-clockwise will increase
the oil flow.
WARNING! The engine must not be running
when making adjustments.
Spark plug!
Recommended settings:
0,5 mm
Bar 11"-15": 0-2 turns from the closed position.
Bar 15"-18": 2-3 turns from the closed position.
The spark plug condition is
influenced by:
Y An incorrect carburettor
setting.Needle bearing maintenance
Y Wrong fuel mixture (too
much oil in the gasoline).
Y A dirty air filter.
These factors cause depositsThe clutch drum is equippedA
on the spark plug electrodes,with one of the following chain
which may result insprockets:
malfunction and starting
Y Spur sprocket (A) (the chain
difficulties.sprocket is welded on the
drum)
If the engine is low on
power, difficult to start orY Rim sprocket (B)
runs poorly at idling speed,(exchangeable)
always check the spark plug
first. If the spark plug is dirty,Both versions have built-in
clean it and check the electrode gap. Readjust if necessary.needle bearing at the driveB
The correct gap is 0.5 mm (.020"). The spark plug should beshaft, whitch has to be
replaced after about a month in operation or earlier if thegreased regularly (once a
electrodes are badly eroded.week).
IMPORTANT! Always use the recommended spark plug type.NOTE! Use only high quality
An incorrect spark plug can severely damage the piston/bearing grease.
cylinder.
English � 31 |
ACEC
