Owner's Manual

MS 201, MS 201 C
English
39
In the mountains
N Turn the high speed screw (H)
slightly clockwise (leaner) – max. up
to the stop
At sea level
N Turn the high speed screw (H)
slightly counterclockwise (richer) –
max. up to the stop
In some countries, the muffler is fitted
with a spark arresting screen.
N If engine performance deteriorates,
check the spark arresting screen in
the muffler
N Let the muffler cool down
N Remove chain sprocket cover – see
"Mounting the bar and chain"
N Remove screw (1)
N Pull out spark arresting screen (2)
N Clean the dirty spark arresting
screen, replace if damaged or
heavily carbonized
N Reinsert spark arresting screen
N Fit screw
N Refit the chain sprocket cover
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 the
stop position 0
N Release the chain brake
If you make the setting too lean it
will increase the risk of engine
damage through lack of
lubrication and overheating.
Spark Arresting Screen in
Muffler
0011BA018 KN
1
0011BA019 KN
2
Spark Plug
0011BA001 KN