I have a 2000 Yamaha Bear Tracker 250 that has been sidelined in my shed for years. Originally it would not idle so I took the carb out and cleaned it up a few years ago. Like a lot of my projects I lost interest in it and the carb sat for a few years apart in a dry pan that was covered. Now I am trying to get it back together so I can go out to the desert and ride it around. I have it back together thanks to a video on You Tube and it runs. It idles great now but I have a different problem. When I give it gas it falls all over itself and will shut off. I did replace the float last week with a new unit. I also tested for vacuum leaks with a can of carb cleaner while it was running and there were no changes in the idle. Someone please please point me in the right direction.