Winter Operation - Stihl FS 300 Instruction Manual

Erratic idling behavior, poor
acceleration
N Carry out standard setting on low
speed screw (L).
Idle setting is too lean –
N Turn the low speed screw (L) slowly
counterclockwise until the engine
runs and accelerates smoothly.
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
Fine tuning for operation at high
altitude
A slight correction of the setting may be
necessary if the engine does not run
satisfactorily:
N Check the standard setting.
N Warm up the engine.
N Turn the high speed screw (H)
slightly clockwise (leaner).
FS 300, FS 350, FS 400, FS 450, FS 480

Winter Operation

FS 400, FS 450, FS 480
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
N Remove the standard air filter (1)
and install the special filter (2) for
winter operation.
N
Push the cover (3) up against the
underside of the filter cover. This is
the winter position.
At temperatures above 10°C
2
N Remove the special air filter (2) for
winter operation and install the
standard filter (1) in its place.
N Push the cover (3) into the summer
position.
2
English
3
1
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