Winter Operation - Stihl MS 171 Manual De Instrucciones

English
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:
38

Winter Operation

Winter shutter (MS 211 only)
At temperatures below +50°F (+10°C):
Remove the shroud – see "Shroud".
N
every 3
months
every 6
months
every 12
months
Use the combination wrench to turn
N
the shutter, next to the spark plug,
45° counterclockwise.
1 Winter operation
2 Summer operation
Install the shroud – see "Shroud".
N
Heated air is now drawn in from around
the cylinder to warm the carburetor – this
helps prevent carburetor icing.
NOTICE
At temperatures above +68°F (+20°C),
return the shutter to the summer
position. This is necessary to avoid
engine running problems and
overheating.
Fitting the cover plate
(Special accessory, not for Easy2Start
models)
1
2
Place the cover plate (1) in position
N
and secure it with the screws (2).
If your saw is very cold, start the
N
engine and run it until it reaches
normal operating temperature.
2
MS 211 only: When the cover plate is
fitted, the winter shutter may be in either
the winter or summer positions. Move it
to the winter position when temperatures
drop below +50°F (+10°C).
MS 171, MS 181, MS 181 C, MS 211, MS 211 C
2
1