Adjusting The Carburetor - Stihl FS 45 Instruction Manual

English
4
3
: Remove the felt filter element (3).
: Do not wash the felt element. Fit a
new one. As a temporary measure,
clean it by knocking it out on the
palm of your hand or blowing it out
with compressed air.
Replace damaged parts of filter.
: Place the felt element (3) in the filter
housing (4).
: Close the filter cover so that it snaps
into position.
24

Adjusting the Carburetor

L
H
1
3 4 /
LA
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
With this carburetor it is only possible to
adjust the engine idle speed within fine
limits.
Standard Setting
: Shut off the engine.
: Mount the cutting tool.
: Check the air filter and replace if
necessary.
: Turn high speed screw (H)
counterclockwise (max.
far as stop.
: Carefully screw the low speed
screw (L) down onto its seat. Then
open it one turn counterclockwise
: Start and warm up the engine.
: Adjust idle speed with the idle speed
screw (LA) so that the cutting tool
does not rotate.
Fine Tuning
A slight correction of the setting of the
high speed screw (H) may be necessary
if engine power is not satisfactory when
operating at high altitude or at sea level.
3
/ turn) as
4
FS 45