Hello new to the forum so if I’m missing info just let me know. Alright so I recently purchased a 2000 big bear 400cc 2×4, and it ran perfectly for the first day but being a new owner and all I left the fuel switch on overnight and didn’t realize until the next morning when it wouldn’t start, so I took off the spark plug pushed out the fuel by pushing the start button and then noticed a fuel and oil mixture in the air box so I cleaned it out along with changing the oil which had gas in it as well. The next day I got it started but it would almost shut off but I would keep it alive by pumping the throttle and I figured it was the carb so I partially took it apart and cleaned it with carb cleaner (it didn’t seem dirty at all and the diaphragms appeared to be in good shape) and now it won’t stay on for more than five seconds without cutting off unless I press the throttle slightly than it will run for as long as I press the throttle, and so that’s where I’m at. Thanks for reading and any helpful advice would be greatly appreciated.