there much be a special tool to adjust the H and L screw
quang nguyen
May 2009
leave the idle speed screw all the way out. the other 2 screws should be an H and an L , turn both of these all the way in, back the H screw out 1.5 turns and the L 1.25 turns. you may need to adjust your idle screw in some after this.
pup
February 2009
I can answer this question...
How do you adjust carburator on a craftsman 32cc weedeater?