Adjusting The Carburetor - Stihl BG 50 Instruction Manual

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► Take the filter (3) out of the filter housing (4).
► Install a new filter. Temporary measure: wash
the filter.
Replace any damaged parts.
► Fit the filter (3) in the filter housing (4).
► Fit the filter cover (2) so that it snaps into posi‐
tion.
8

Adjusting the Carburetor

8.1 General Information
The carburetor comes from the factory with a
standard setting.
This setting provides an optimum fuel-air mixture
under most operating conditions.
8.2 Preparations
► Shut off the engine.
► Check the air filter and clean or replace if nec‐
essary.
► Check the spark arresting screen (not in all
models, country-specific) in the muffler and
clean or replace if necessary.
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2
3
8.3 Standard Setting
► Turn high speed screw (H) counterclockwise
as far as stop (no more than 3/4 turn).
► Turn the low speed screw (L) clockwise as far
as stop, then turn it back 3/4 turn.
8.4 Adjusting Idle Speed
► Carry out the standard setting.
► Start and warm up the engine.
8 Adjusting the Carburetor
0458-425-0121-D