I have a kawasaki 550 mule and I am have transmission trouble I think. I was pulling a heavy load and it just stopped pulling. I thought I probably broke the belt since it was about 6 years old and never have replaced it. I pulled the belt cover and it was a little worn but not broken. I replaced it anyway. The drive pully on the axle and the clutch assembly on the motor all expand and the belt turns but the wheels do not. I jacked it up and gave it some gas and the wheel turned but it will not turn when it is under a load. Can anyone help based on information I have provided.

 

striped the axle?