► Depress the outer ring of the choke knob and
fit the filter cover.
► Insert the screw and tighten it down firmly.
8.1.2 Paper filter
► Take out the screw (2).
► Depress the outer ring (arrows) of the choke
knob (1) and then turn it to e.
► Depress the outer ring (arrows) of the choke
knob (1) and hold it depressed.
► Remove the filter cover (3).
► Clean away loose dirt from around the filter
and inside the filter cover.
► Remove and check the filter element (4) –
replace if dirty or damaged.
► Fit the filter in the filter housing.
► Position filter cover against the left side of the
filter housing and swing it to the right – the two
lugs (arrows) must engage the filter cover
openings.
► Depress the outer ring of the choke knob and
close the filter cover.
► Insert the screw and tighten it down firmly.
9 Adjusting the Carburetor
9.1 General Information
This setting provides an optimum fuel-air mixture
under most operating conditions.
9.2 Preparations
► Shut off the engine.
► 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.
► Inspect cutting blades and clean if necessary
(clean, move freely, not warped).
9.3 Adjusting Idle Speed
Engine stops while idling
► Warm up the engine for about 3 minutes.
► Turn the idle speed screw (LA) slowly clock‐
wise until the engine runs smoothly – the cut‐
ting blades must not move.
English 9 Adjusting the Carburetor
14 0458-448-8321-C