Cleaning Air Filter; Motor Management - Stihl MS 290 Manual De Instrucciones

Cleaning Air Filter

Dirty air filters reduce engine power,
increase fuel consumption and make
starting more difficult.
When there is a noticeable loss of
engine power:
: Press down the throttle trigger
interlock and set Master Control
lever to "Cold Start" l.
:
Turn the twist lock above the
rearhandle counterclockwise.
:
Lift off the carburetor box cover to
the rear.
:
Clean away loose dirt from around
filter.
MS 290, 310, 390
1
3
2
2
: Pull prefilter (1) upward and out.
: Unscrew slotted nuts (2).
: Remove main filter (3).
:
Separate the two halves of the filter.
:
Knock the filter out on the palm of
your hand or blow it out with
compressed air from the inside
outward.
In case of stubborn dirt:
:
Wash with STIHL universal cleaner
or in a clean, non-flammable
cleaning solution (e.g. warm soapy
water) and dry all parts of the filter.
Never use a brush to clean the fleece
filter element
:
Always replace damaged
filterelements.
:
Reinstall the filters.
English / USA

Motor Management

Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
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