English
Fine tuning for operation at high
altitude
If idling behavior is erratic or
acceleration is poor
N
Warm up the engine.
N
Turn the low speed screw (L) 1/8 of
a turn (45°) counterclockwise.
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
A slight correction of the setting may be
necessary if the engine does not run
satisfactorily:
N
Turn high speed screw (H)
clockwise (leaner) – no further than
stop.
If the setting is too lean there is a
risk of engine damage due to
insufficient lubrication and
overheating.
40
Spark Arresting Screen in
Muffler
In some countries the muffler is
equipped with a spark arresting screen.
N
If the engine is down on power,
check the spark arresting screen in
the muffler.
N
Wait for the muffler to cool down.
1
2
N
Take out the screw (1).
N
Pull out the spark arresting
screen (2).
N
Clean the spark arresting screen. If
the screen is damaged or heavily
carbonized, fit a new one.
N
Refit the spark arresting screen.
N
Insert the screw and tighten it down.
Spark Plug
If engine is down on power, difficult to
start or runs poorly at idling speed, first
check the spark plug.
Fit a new spark plug after approx. 100
operating hours or earlier if the
electrodes are badly eroded.
Wrong fuel mix (too much engine oil in
the gasoline), a dirty air filter and
unfavorable running conditions (mostly
at part throttle etc.) affect the condition
of the spark plug. These factors cause
deposits to form on the insulator nose
which may result in trouble in operation.
Removing the spark plug
N
Move the Master Control lever to
stop position (0)
N
Push the hand guard forward – the
chain is locked.
2
1
N
Open the twist locks (1) by turning
them 1/4 turn counterclockwise with
the combination wrench.
N
Remove the shroud (2).
1
1
MS 362 C