NOTICE
Above 20 °C, always return the slide to the posi‐
tion for "summer operation" again! Risk of engine
malfunction – overheating!
15.2
Air filter system
► Retrofit new air filter if necessary – see "Air fil‐
ter system"
15.3
At temperatures below -10 °C
(intake air pre-heating)
171BA002 KN
Under extreme winter conditions (temperatures
below -10 °C, powdered or drifting snow), it is
recommended to break out the insert in the cover
along the perforated outline using a suitable tool.
This causes only warm air from the vicinity of the
cylinder to be taken in – prevents icing of air filter
and carburetor.
► if the chain saw is extremely cold (frost forma‐
tion) – after starting, bring the engine up to
operating temperature at increased idle speed
(disengage chain brake!)
When used with pre-heating of intake air, heavier
fouling of the air filter may occur – shorten clean‐
ing intervals.
1
171BA003 KN
► if engine trouble occurs, first check whether
use of intake air pre-heating is necessary
► at higher temperatures, close the opening with
stoppers (1) (special accessory)
English
15 Winter Operation
24
0458-550-0121-B