MS 241 C-M
English
33
felling cut. The chain brake will operate
only if it has been properly maintained
and the hand guard has not been
modified in any way.
Check operation of chain brake
Before starting work: Run engine at idle
speed, engage the chain brake (push
hand guard toward bar nose).
Accelerate up to full throttle for no more
than 3 seconds – the chain must not
rotate. The hand guard must be free
from dirt and move freely.
Chain brake maintenance
The chain brake is subject to normal
wear. It is necessary to have it serviced
and maintained regularly by trained
personnel, such as your STIHL servicing
dealer, at the following intervals:
Pre-heating carburetor
N Remove the shroud – see "Shroud"
At temperatures under +50 °F (+10 °C)
N Using a screwdriver, pry the shutter
out of the s (summer operation)
position
N Place the shutter with the opening in
the direction of the chain saw in
the r position (winter operation) –
shutter must audibly snap into place
N Fit the shroud – see "Shroud"
Heated air is now drawn in from around
the cylinder and circulates around the
carburetor – this helps prevent
carburetor icing.
At temperatures above +70 °F (+20 °C)
N Ensure that the shutter is always
returned to position s (summer
operation), otherwise the engine
may malfunction due to overheating
At temperatures below +14 °F (-10 °C)
Under extreme winter conditions
(temperatures below +14 °F (-10 °C),
powdered or drifting snow), it is
recommended to use the "cover plate
mounting kit" (special accessory). The
mounting kit keeps out powdered or
drifting snow.
N If the chain saw is extremely cold
(frost formation) – after starting,
bring the engine up to operating
temperature at medium speed
(disengage chain brake!)
Mounting the cover plate (special
accessory)
N Insert cover plate (1) with both tabs
(arrows) and fasten with screws (2)
Full-time usage: every 3
months
Part-time usage: every 6
months
Occasional usage: every 12
months
Winter Operation
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