Basic settings are L 1 1/4 H 1 turns out from closed, fine tuning would be done from there, idle speed should be approx 3000 rpm and max revs should be no more than 12500rpm, max revs should be set up with a rev counter, exceeding the max rpm can cause major engine failures.
Always use good quaility two stroke oil.
Husqvarna man, April 2010
