Stihl MS 251 C-Q Instruction Manual page 35

When engine begins to fire
4
Set the Master Control lever (4) to
N
the starting throttle position (n).
Hold and start your saw as
N
described.
As soon as the engine runs
4
3
Press down trigger lockout and the
N
blip the throttle trigger (3) – the
Master Control lever (4) moves to
the run position (F) and the engine
settles down to idling speed.
NOTICE
As the chain brake is still engaged, the
engine must be returned to idling speed
immediately – or the engine housing and
chain brake might otherwise be
damaged.
MS 251 C-Q
STOP
0
Pull the hand guard back towards
N
the front handle.
The chain brake is now disengaged –
your saw is ready for operation.
NOTICE
Always disengage chain brake before
accelerating the engine. High revs with
the chain brake engaged (chain locked)
will quickly damage the clutch and chain
brake.
STOP
At very low outside temperatures
0
Allow engine to warm up at part
N
throttle.
Change over to winter operation if
N
necessary – see "Winter Operation".
Stopping the engine
Move the Master Control lever to the
N
stop position (0).
If the engine does not start
If you did not move the Master Control
lever from the choke closed
position (l) to the starting throttle
position (n) quickly enough after the
engine began to fire, the combustion
chamber may be flooded.
Move the Master Control lever to the
N
stop position (0).
Remove the spark plug – see
N
"Spark Plug".
Dry the spark plug.
N
Crank the engine several times with
N
the starter to clear the combustion
chamber.
Refit the spark plug – see "Spark
N
Plug".
Set Master Control lever to the
N
starting throttle position (n) – even
if the engine is cold.
Now start the engine.
N
English
33