Adjusting The Carburetor - Stihl FS 55 Instruction Manual

4
3
Remove the felt element (3) from
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the filter housing (4) and replace it –
knock out or blow out as a
temporary measure – do not wash.
Replace damaged parts.
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Fit the felt element (3) in the filter
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housing (4).
Close the filter cover so that it snaps
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into position.
FS 55, FS 55 C, FS 55 R, FS 55 RC

Adjusting the Carburetor

General Information
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
Preparations
Shut off the engine.
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Mount the cutting attachment.
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Check the air filter and clean or
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replace if necessary.
Check the spark arresting screen
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(not in all models, country-specific)
in the muffler and clean or replace if
necessary.
Different Standard Settings
Different carburetors are installed at the
factory. A different standard setting is
necessary for each of these carburetors.
Identifying the Carburetor
Use the following illustrations to
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identify the carburetor installed in
your machine and then adjust the
carburetor as described:
1 2
H L H
LA LA
Carburetor 1
2-MIX carburetor with limiter caps on
high speed screw (H) and low speed
screw (L), and marked "2-MIX"
Carburetor 2
Carburetor without limiter caps on high
speed screw (H) and low speed
screw (L)
English
L
27