Small Engine Troubleshooting Problems? Ask a Mechanic Now.
if belt is around both pulleys, and its not moving, check to see if the cable is attached to the transmission. Can you feel tension when you push handle downwards? You also have gears on the wheels, an gears on the axle that can go bad.
What is the model and serial number of your mower. (UNDER REAR FLAP or REAR SDE OF DECK)