My weed eater won't start need to know how to set the air jets so I can get it started

Start at 1.5 turn out, it'll start there, fine tune from there. Good luck

Assuming you did not do anything to make them become "unadjusted" you will likely find an issue more difficulty to fix than setting the screw. Parttime is correct about the setting but let us know if it still won't start. Also try leaving it on full choke after several pulls. Then try full choke for 2 pulls and then half choke full throttle for the next few pulls, anything?