Instruction Manual

11 Cleaning the Air Filter
11.1 If there is a noticeable loss of
engine power
232BA017 KN
1
2
►
Set the choke lever to g.
► Press in the tab (1) and swing the filter
cover (2) down.
► Clean away loose dirt from around the filter.
232BA018 KN
4
3
► Remove the felt element (3) from the filter
housing (4) and replace it – knock out or blow
out as a temporary measure – do not wash.
► Replace damaged parts.
► Fit the felt element (3) in the filter housing (4).
► Close the filter cover so that it snaps into posi‐
tion.
12 Adjusting the Carburetor
12.1 General Information
The carburetor comes from the factory with a
standard setting.
This setting provides an optimum fuel-air mixture
under most operating conditions.
12.2 Preparations
► Shut off the engine.
► Mount the cutting attachment.
► Check the air filter and clean or replace if nec‐
essary.
► Check the spark arresting screen in the muf‐
fler and clean or replace if necessary. STIHL
recommends that you have servicing and
repair work carried out exclusively by an
authorized STIHL servicing dealer.
12.3 Different Standard Settings
Different carburetors are installed at the factory.
A different standard setting is necessary for each
of these carburetors.
12.4 Identifying the Carburetor
► Use the following illustrations to identify the
carburetor installed in your machine and then
adjust the carburetor as described:
LA
H
L
LA
H
L
234BA028 KN
1
2
12.4.1 Carburetor1
Carburetor with limiter caps on high speed
screw (H) and low speed screw (L)
12.4.2 Carburetor2
Carburetor without limiter caps on high speed
screw (H) and low speed screw (L)
English
11 Cleaning the Air Filter
18 0458-232-8321-F