Stihl BR 320 - Page 17

Dirty air filters reduce engine power,
increase fuel consumption and make
starting more difficult.
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•
Turn choke knob to J
•
Release the screws  and pull off
the filter cover .
•
Clean away loose dirt from around
the filter.
•
Remove the prefilter  (if fitted)
from the filter element .
•
Wash the prefilter in fresh, non-
flammable cleaning solution (e.g.
warm soapy water) and then dry.
Always replace a damaged filter
element.
•
Take out the filter element  - if it
is dirty, fit a new one.
•
Fit the felt element  in the filter
base .
•
Slide the prefilter  over the filter
element.
•
Fit the filter cover and tighten down
firmly.
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Exaust emissions are controlled by the
design of the fundamental engine para-
meters and components (e.g. carbu-
ration, ignition, timing and valve or part
timing) without the addition of any major
hardware.
The carburetor comes with a standard
setting.
This is the optimum setting to ensure
your machine will operate reliably with
the lowest possible emission under most
operating conditions.
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If it is necessary to readjust the car-
buretor from scratch, first carry out the
standard setting.
Turn
+ high speed adjusting screw and
/ low speed adjusting screw
counterclockwise (richer)
or as far as stop.
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LH
353BA000 KN
1
2
1
353BA043 KN
34
5
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