Cleaning The Air Filter - Stihl MS 381 Instruction Manual

English

Cleaning the Air Filter

If there is a noticeable loss of engine
power
Remove the carburetor box cover.
3
2
1
Move the Master Control lever (1) to
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the normal run position.
Loosen the knob (2) in direction of
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arrow.
Remove the carburetor box
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cover (3).
Removing the air filter
Clean away loose dirt from around
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the filter.
84
5
4
Unscrew the slotted nuts (4).
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Remove the filter (5) and separate
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the two halves of the filter.
7
6
Loosen the screw (6) in the
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carburetor box cover and remove
the prefilter (7).
Cleaning the air filter
Knock the filter out on the palm of
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your hand or blow it clear with
compressed air from the inside
outwards.
If filter is caked with dirt:
Wash the filter in STIHL special
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cleaner (special accessory) or a
clean, non-flammable solution (e.g.
warm soapy water) and then dry.
NOTICE
Do not use a brush to clean the fleece
filter
Always replace damaged filters.
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Installing the air filter
Reassemble the filter components
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and check that the choke shutter (8)
and torsion spring are properly
seated.
The end of the spring (9) must
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engage the slot (arrow).
Secure the main filter and prefiler in
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position.
Fit the carburetor box cover.
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MS 381