idle adjustment

every machine is different, every carb is different, so thats a tough one, you will know when you have it just right, you will feel it, stock or aftermarket carb?
 
its a 2 stroke it dont need to idle....j/k

if its s stock carb there is a "thumb" type screw that is under the seat, near the gas tank, under a rubber flap. Turn it to the right for higher idle and left for lower. The idle should be low. Maybe just above where the quad is going to die.