Originally Posted by JPaulS60R

Aright guys, I bought another one for my son. The guy I bought it from said it ran great his grandson only rode it once and flipped it over and the kids mother made the grandfather get rid of it. So when I got it the battery was dead so I replaced it with a new one. Changed the oil, got a new plug and cleaned the carb because he said it had been sitting for a year or so. He said the carb needed to be tuned. I got the quad fired up and kept it running feathering the throttle. I've adjusted the air/fuel screw and idle screw cannot seem to get it running right. I got it idling perfect with the choke fully closed. But it had absolutely no top end power. I shut off the choke and it dies. It fires back up and ill feather the throttle again and runs great all through rpm range except for idle. It'll rev up and down just extremely rough idle. I've tried just about every screw setting and cannot get the idle correct. Please help. Thanks in advance