Winter Operation - Stihl FS 450 Instruction Manual

NOTICE
After returning from high altitude, reset
the carburetor to the standard setting.
If the setting is too lean there is a risk of
engine damage due to insufficient
lubrication and overheating.
FS 400, FS 450

Winter Operation

Mount the "Intake Air Preheating Kit"
4128 007 1001 (special accessory) to
reduce the risk of air filter and carburetor
icing.
At temperatures below +10°C, in
powdery or drifting snow
3
1
Remove the standard air filter (1)
N
and install the special filter (2) for
winter operation.
Push the cover (3) up against the
N
underside of the filter cover. This is
the winter position.
At temperatures above +10°C
2
Remove the special air filter (2) for
N
winter operation and install the
standard filter (1) in its place.
Push the cover (3) into the summer
N
position.
2
English
3
1
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