► If the engine accelerates: Adjust the throttle
cable.
Throttle cable adjustment is not correct.
Shut off the engine
► Start the engine.
► Depress the stop switch.
The engine stops.
► If the engine does not stop:
► Move the choke lever to position .
The engine stops.
► Do not use your trimmer and contact a
STIHL servicing dealer for assistance.
The brushcutter is defective.
11 Operating the Trimmer
11.1
Setting to winter mode
The carburetor may ice up if the engine is oper‐
ated at temperatures below +10 °C. The shutter
must be set to the winter mode so that the carbu‐
retor is additionally heated by warm air from
around the engine.
NOTICE
■ The engine may overheat if is operated in win‐
ter mode at temperatures above +10 °C.
► Change setting to summer mode.
► Shut off the engine.
1
2
0000-GXX-8720-A0
1
2
3
► Take out the screw (1).
► Pull out the shutter (2).
► Hold the shutter (2) so that the snowflake
points to mark (3).
► Insert the shutter (2).
► Screw in the screw (1).
When working at temperatures below -10°C or in
powder or drifting snow, a cover plate must also
be fitted to the engine housing and an air filter
with plastic webbing. The accessories and User
Manual are available from a STIHL servicing
dealer.
11.2
Summer Operation
The shutter must be set to summer mode when
working at temperatures above +10°C.
► Shut off the engine.
1
1
2
2
3
0000-GXX-8721-A0
► Take out the screw (1).
► Pull out the shutter (2).
► Hold the shutter (2) so the sun points to the
mark (3).
► Fit the shutter.
► Fit the screw (1).
11.3
Calibrating the trimmer
The trimmer adjusts itself automatically for opti‐
mum performance during operation. Calibration
enables the trimmer to be adjusted to be faster
for optimum performance.
► Remove the cutting attachment.
This allows the brushcutter to be reliably
adjusted for optimum performance.
► If the outside temperature is below -10°C or
the engine is cold:
► Start the engine.
► Warm up the engine by opening and closing
the throttle for about 1 minute.
► Shut off the engine.
1
min
A
B
C
s
> 30 s
30-60 s
0000-GXX-3825-A0
► Move the choke lever to position .
► Start the engine without depressing the throttle
trigger.
The engine runs and the choke lever remains
in position .
► Run the engine for at least 30 seconds but no
more than 60 seconds (A) without depressing
the throttle trigger.
English
11 Operating the Trimmer
16
0458-844-0101-A
