Re: ATC 200
That is a common problem. My 200s did the same thing. Assuming you do not have a "bird's nest" in the airbox, the problem is most likely clogged low speed passageways in your carb. Carb cleaner will not get it out either. Your best chance is to get the strongest injector cleaner you can find (NAPA is fine) and mix it about double what it calls for on the container. I did this with my 200s and after 2 tanks, cleared it up. If it doesn't work, your only alternative is to replace the carb.