yamaha drive gas

We purchased this with the understanding that the engine was seized, the clutch was stiff and we were able to break that free with lubrication. We made sure the oil capacity was correct, had the carb cleaned and we have spark, its wanting to start but seems to be popping back thru the air filter...

My 2008 Yamaha G29 Drive (Gas) golf cart won't start and the forward/reverse lever is stuck in the forward position. I drove it last Saturday and then parked it in the shed, without any issues, but the next morning when I went to pull it out of my shed, I noticed that I could not move the shift...