Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Clutch is ok. Belt is loose! With the engine OFF, turn on the key, and turn on the pto switch Now see if you can turn the belt , belt should be tight and not turn on any of the pulleys.
What is the deck number, it is not shown with the tractor number.
Good for you! It only took me 50 years to get to this stage! have a nice day!