Air Filter System; Cleaning The Air Filter - Stihl MS 290 Instruction Manual

English

Air Filter System

The air filter system can be adapted to
suit different operating conditions by
installing a choice of filters. Changing
the filter is quick and simple.
The saw comes standard with either a
fabric filter or a fleece filter.
Fabric filter
For normal operating conditions and
winter operation.
Fleece filter
For dry and very dusty work areas.
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Cleaning the Air Filter

If there is a noticeable loss of engine
power
Press the throttle trigger lockout and
N
move the Master Control lever to
cold start k
Turn the knob above the rear handle
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to the left – slot vertical
Pull off the carburetor box cover
N
toward the rear
Clean away loose dirt from around
N
the filter
Fouled air filters will impair engine
performance, increase fuel consumption
and make the machine more difficult to
start.
1
3
2
2
Pull off the prefilter (1) upward,
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unscrew slotted nut (2) and remove
main filter (3)
Separate the halves of the filter from
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one another
Knock out the filter or blow it clear
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with compressed air from the inside
outwards.
In case of stubborn dirt:
Wash the filter in STIHL special-
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purpose cleaner (special
accessories) or a clean, non-
flammable cleaning liquid (e.g.,
warm soapy water) and dry it.
Do not clean fleece filters with a brush!
Replace damaged filter
N
Reinstall filter
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MS 290, MS 310, MS 390