The 36 should have two normal slot head screws, the L screw will adjust the fuel mixture from idle too half throttle ( screw out too richen ) the H screw will adjust the fuel mixture from half throttle too full engine revs, if you adjust this screw you should have the maximum no load revs checked with a tachometer, max rpm should not exceed 12500
Husqvarna man
May 2010
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