MS 251, MS 251 C
English
36
At temperatures above +70°F (+20°C)
N Always return the shutter to the
summer position (s ) to avoid
engine running problems and
overheating.
At temperatures below +14°F (-10°C)
N If your saw is very cold (frost or ice
on machine), start the engine and
keep it at a high idle speed (with
chain brake disengaged) until it
reaches normal operating
temperature.
If idling behavior is erratic or
acceleration is poor:
N Turn the low speed screw (L) 1/4 of
a turn counterclockwise.
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L) – see "Adjusting the
Carburetor".
Filter system
N Convert the air filter if necessary –
see "Air Filter System".
Versions with Easy2Start
WARNING
This machine is extremely simple and
easy to start, even for children.
To reduce the risk of serious or fatal
injury:
– do not allow children or other
unauthorized persons to attempt to
start or otherwise use the machine
– never allow children or
unauthorized persons access to the
machine
– never leave the machine
unattended while working or during
work breaks
– after work, store in a safe, secure
location out of the reach of children
and other unauthorized persons
Positions of Master Control lever
Stop 0 – engine off – the ignition is
switched off
Normal run position (F) – engine runs or
can fire.
Starting throttle (n) – this position is
used to start a warm engine. The Master
Control lever moves to the normal run
position as soon as the throttle trigger is
squeezed.
Choke shutter closed (l) – this position
is used to start a cold engine.
Setting the Master Control Lever
To move the Master Control lever from
the normal run position (F) to choke
closed (l), press down the throttle
trigger lockout and squeeze the throttle
Starting / Stopping the
Engine
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