So I bought my son a coleman kt196 a couple of years ago. Im good at working on cars but have never really messed with ATVs until now. I had to replace the drive belt a few days ago but today it broke again. I noticed when I took the cover off and pushed the kart forward that one pulley spun because the chain is on the other side of it. I was able to spin the clutch a couple times by hand then it just got really tight and won't spin. I'm assuming that's probably not normal? Also behind the clutch there a little bit of oil at the bottom of the where the clutch is connected to the motor. What do I do?