Winter Operation - Stihl MS 880 Manual De Instrucciones

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:
Full-time usage:
Part-time usage:
Occasional usage:
MS 880

Winter Operation

At temperatures below +50 °F (10 °C):
Pre-heat carburetor
N Remove the carburetor box cover
N in the carburetor box cover, move
every 3 the slide from summer position (1)
months to winter position (2)
every 6
Heated air is now drawn in from around
months
the cylinder and mixed with cold air –
every 12
this helps prevent carburetor icing.
months
Above +70 °F (20 °C), always
return the slide to the position for
"summer operation" again! Risk of
engine malfunction – overheating!
Machines with HD filter
N Replace the HD filter with a
standard filter
N Replace the carburetor box cover
and tighten the knob
1
2
At temperatures below 14 °F (-10 °C)
(intake air pre-heating)
Under extreme winter conditions
(temperatures below 14 °F (-10 °C),
powdered or drifting snow), it is
recommended to break out the insert in
the cover along the perforated outline
using a suitable tool.
This causes only warm air from the
vicinity of the cylinder to be taken in –
prevents icing of air filter and carburetor.
N if the chain saw is extremely cold
(frost formation) – after starting,
bring the engine up to operating
temperature at increased idle speed
(disengage chain brake!)
When used with pre-heating of intake
air, heavier fouling of the air filter may
occur – shorten cleaning intervals.
English
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