30
English
MS 381
Dirty air filters reduce engine power,
increase fuel consumption and make
starting more difficult.
If there is a noticeable loss of
engine power
: Move the Master Control lever (1)
to the normal run position.
: Loosen knob (2) in direction of
arrow.
: Remove the carburetor box
cover (3).
: Clean away loose dirt from around
the filter.
: Unscrew the slotted nuts (4).
: Remove the filter (5) and separate
the two halves of the filter.
: Take out the screw (6) in the
carburtetor box cover and remove
the prefilter (7).
: Knock the filter out on the palm of
your hand or blow it clear with
compressed air from the inside
outwards.
Do not use a brush to clean the
fleece filter.
In case of stubborn dirt:
: Wash the filter components in
STIHL universal cleaner or a clean,
non-flammable solution (e.g. warm
soapy water) and then dry.
: Always replace a damaged filter.
: Reassemble the filter components.
: Make sure the choke shutter (8) and
torsion spring are properly seated:
The hook of the torsion spring (9)
must engage the slot (arrow).
: Secure the main filter and prefilter in
position.
: Fit the carburetor box cover.
Cleaning the Air Filter
215BA006 KN
1
2
3
4
215BA007 KN
5
215BA008 KN
6
7
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