Most machines will run with carb settings at one turn open from closed on both H&L screws, you will need to adjust for good pick on the L screw, the H screw is almost like a govenor, so unless you have a taco to check the max free revs you should not be touching this screw, very high revs and low oil means only one thing, Seizure, so be careful as this could end up a very costly episode.
Husqvarna man, December 2009
