21KM 110, KM 130
English / USA
Dirty air filters reduce engine power, 
increase fuel consumption and make 
starting more difficult.
If there is a noticeable loss of engine 
power:
: Set the choke knob to g.
: Take out the screw (1) and remove 
the filter cover (2).
: Clean away loose dirt from around 
the filter.
: Grip the filter element (3) at the 
notch (arrow) in the filter housing (4) 
and take it out.
: Fit a new filter element. As a 
temporary measure you can knock it 
out on the palm of your hand or blow 
it out. Do not wash.
: Replace any damaged parts.
: Install filter element in the filter 
housing.
: Refit the filter cover.
: Insert the screw and tighten it down 
firmly.
Exhaust emissions are controlled by the 
design of the fundamental engine 
parameters and components (e.g. 
carburation, ignition, timing and valve or 
port timing) without the addition of any 
major hardware.
The carburetor comes from the factory 
with a standard setting.
This setting provides an optimum fuel-air 
mixture under most operating 
conditions.
With this carburetor it is only possible to 
adjust the engine idle speed within fine 
limits.
Cleaning the Air Filter
1
266BA009 KN
2
4
Motor Management Adjusting the Carburetor
266BA008 KN