maybe this helps to understand
Full load:
larger main jet nozzle -> mixture becomes richer
smaller main jet nozzle -> mixture is leaner
1/4 to 3/4 throttle:
Needle-> Set-> clip higher lean
Needle-> clip lower down the page-> richer
1/8 to 1/4 gas:
Slide> cutaway more> lean
Slide-> smaller cutaway> richer
larger pilot jet -> richer mixture
smaller pilot jet -> leaner
Idle to 1/8 Gas:
Idle screw pure-> more idle
Idle screw out-> less idle
Mixture screw (air filter side) -> in richer
Mixture screw (air filter side) -> out leaner
Mixture screw (cylinder side) -> in leaner
Mixture screw (cylinder side) -> out richer
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4 strokes are only good for power generators
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