Stihl MS 391 Safety Manual page 46

English
Position choke shutter closed l
– if engine is cold (even if the engine
has stalled during opening of
throttle after starting)
Position starting acceleration n
– if engine is warm (once the engine
has been running for approx. one
minute)
N
Hold and start the chain saw
When the engine has turned over for
the first time
1
N
Move the Master Control lever (1) to
the position starting acceleration n
N
Press the button on the
decompression valve
N
Hold and start the chain saw
24
Once the engine is running
N
Press the throttle trigger lockout and
blip the throttle trigger (2); the
Master Control lever (1) jumps to
the operating position F and the
engine begins to idle
STOP
0
N
Pull the hand guard toward the
handlebar
The chain brake is released – the chain
saw is ready for use.
Open the throttle only when the
chain brake is off. Increased
engine speeds with the chain
brake on (saw chain is stationary)
will quickly damage the clutch and
chain brake.
At very low outside temperatures
N
STOP
N
1
0
Switch off engine
2
N
If the Master Control lever was moved
from the position starting
acceleration n to the stop position 0 –
afterwards simultaneously press the
throttle trigger lockout and the throttle
trigger.
If the engine does not start
The Master Control lever was not
returned from the position choke shutter
closed l to starting acceleration n in
time, the engine may be flooded.
N
N
N
N
N
N
let the engine warm up briefly with
the throttle slightly open
if necessary, configure for winter
operation, see "Winter Operation"
Move the Master Control lever to the
stop position 0
Move the Master Control lever to the
stop position 0
Remove the spark plug – see
"Spark plug"
Dry spark plug
Crank the engine several times with
the starter – to clear the combustion
chamber
Replace the spark plug – see
"Spark plug"
Set the Master Control lever to
starting acceleration n – even if
the engine is cold
MS 311, MS 391