Ok,When i had mine it seemed like 1 1/2 turns from seat on the air screw was in a manual, but i beleive i had to play with mine and it was more like 1 turn from seat. Your plugs will tell ya and your RPM at IDLE. Should idle right around a grand to 1200 I beleive[/b]
right now it idles at 1500. I have not messed with the air screw. Will check the plugs.