MS 650, MS 660
English
27
The air filter system can be adapted to
different operating conditions by the
insertion of different air filters.
Retrofitting is simple.
N HD2 filter (black filter frame, pleated
filter fabric) for normal, dry or
extremely dusty operating
environments
N HD air filter (black filter housing)
with felt prefilter for normal, dry or
very dusty operating environments
N Wire mesh air filter (green filter
housing) for extreme winter
conditions (e. g., powdered or flying
snow or frost formation)
When dry, STIHL filters attain a long
service life.
N Always use STIHL filters dry
Fouled air filters will impair engine
performance, increase fuel consumption
and make the machine more difficult to
start.
N Turn the knob above the rear handle
in the direction of the arrow and
remove the carburetor box cover
N Remove filter
Air Filter System
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