I do not know but will try this, on my saws there are 2 holes with flat blade screw heads down in there , beside this hole is a number 1.5 3 2 ? these indicate how many turns out from set in in but not seated tight, then unscrew out that many turns or half as indicated.
otherwise try 1.5 L and 2-3 H these are the high rpm and low rpm settings each affects the other, so get it to idel the hold it open adjust high then adjust idle again, typically the L will run a bit rich and the H will run a bit lean, get it started and go back and forth youll get it,, Or not Sorry? CD
SOURCE: how to adjust carb. settings on a McCulloch Pro Mac 610 chain saw
turn both jets in untill snug (don't force) turn out ccw one full turn. increase by 1/8 turns untill set proper. should be between 1 1/4 and 1 1/2 normally. good luck. be safe.
SOURCE: Factory carb settings for this saw? Could ssome one help me with this ?
What kind of saw is it???
on average low jet is about 1 1/2 turn counterclockwise out after bottoming out the jet slightly
high jet about 1 turn counterclockwise after bottoming jet out clockwise
hope this helps getting your saw going
Testimonial: "It is a jonsered 2149 turbo"
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