Have a 576xp that I rebuilt last year (non AT), new crank seals, case gasket, base gasket, you name it it’s been replaced. Reassembled saw with the gaskets and a little bit of yamabond, needless to say saw ran great the first time I ran it for about half a day. Sometime later I go to use it again, and runs awesomely from 1/4 to full throttle, doesn’t miss a beat in the cut or anything. Problem is sometimes (not all the time) I’ll left off the throttle to let it idle, and it will either idle perfectly, or idle for about 5 seconds then start to race like it’s running lean, blip the throttle a few times and all is well, makes no sense to me. Once that started I sprayed brake clean at the carb where it meets the intake while the saw was running, and it stalled. So took intake manifold out and found some slight cracking, figured I’d replace it and that would fix my issue. Replaced intake manifold and still same issue, only wants to lean out occasionally and still stalls or try’s to stall when I spray the carb, carb has been rebuilt, could the carb itself have a leak somewhere causing it to suck extra air at idle? Ive worked on a many of saws and haven’t had one with this issue yet, I’ve always been able to solve an air leak problem, thank you much!
