Winter Operation - Stihl MS 241 C-M Instruction Manual

The chain brake will operate only if the
hand guard has not been modified in any
way.
Check operation of the chain brake
Before starting work: Run engine at idle
speed, engage the chain brake (push
hand guard toward bar nose) and open
the throttle wide 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. STIHL recommends that you
have servicing and repair work carried
out exclusively by an authorized STIHL
servicing dealer. Maintain the following
servicing intervals:
Full-time usage: every 3
months
Part-time usage: every 6
months
Occasional usage: every 12
months
MS 241 C-M

Winter Operation

Pre-heating carburetor
Remove the shroud – see "Shroud"
N
At temperatures below +10 °C
Using a screwdriver, pry the shutter
N
out of the s (summer operation)
position
Place the shutter with the opening in
N
the direction of the chain saw in
the r position (winter operation) –
shutter must audibly snap into place
Fit the shroud – see "Shroud"
N
Heated air is now drawn in from around
the cylinder and circulates around the
carburetor – this helps prevent
carburetor icing.
At temperatures above +20 °C
Ensure that the shutter is always
N
returned to position s (summer
operation), otherwise the engine
may malfunction due to overheating
At temperatures below -10 °C
Under extreme winter conditions
(temperatures below -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.
If the chain saw is extremely cold
N
(frost formation) – after starting,
bring the engine up to operating
temperature at medium speed
(disengage chain brake!)
Mounting the cover plate (special
accessory)
1
Insert cover plate (1) with both tabs
N
(arrows) and fasten with screws (2)
When the mounting kit is used, the
shutter must be in the winter position.
English
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