Instruction manual

MS 201 T
English
25
N Check the standard setting
N Let the engine warm up
In the mountains
N Turn the high speed screw (H)
slightly clockwise (leaner) – max. up
to the stop
If you make the setting too lean it will
increase the risk of engine damage
through lack of lubrication and
overheating.
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
N If the engine is down on power,
difficult to start or runs poorly at idle
speed, first check the spark plug.
N Fit a new spark plug after about 100
operating hours – or sooner if the
electrodes are badly eroded. Install
only suppressed spark plugs of the
type approved by STIHL – see
"Specifications".
Removing the spark plug
N Move the master control lever to the
stop position 0
N Releasing the chain brake
Spark Arresting Screen in
Muffler
0011BA018 KN
1
0011BA019 KN
2
Spark Plug
0012BA002 KN
H
L