After removing air cleaner cover I discovered a puddle of gas in the bottom of the housing. What would cause that?

 

Could be time to replace a worn needle and seat in the carb or if you've been doing a lot of climbing could be just fuel collecting in the air box. Same thing can happen on accumulation of oil in the air box from the crank case vent. Plus if it's running boggy or fouls plugs good sign to check into the carb. OPT

 

We do no climbing with the 4 wheeler, it is just used to run around our property. It probably has less than 100 total hours on it. In fact we are still running the original tires on it & they are still in good condition. I will check the carb, for a bad or sticking needle valve. It runs good & starts easy. Thanks