Just recently bought a ATV-J032 Coolster 125cc ATV with Automatic Transmission w/Reverse, Electric Start and have only ran it a few hours.

Out on some trails going up hill and lost power. Starts up fine idles great, but when given gas/full throlltle it barley move if at all.

Transmission out so early? or just a belt problem> The chain has good tension.

I was in a lot of mud.

Any help would be appreciated.

 

I'd clean the carb first. Sounds like a plugged main jet.