Murray Riding Mower won't move

[wds777]

I have a 14.5 horsepower Murray riding mower. It starts fine, blades run fine, but the mower won't move. All belts seem to be in place and it looks like mechanical linkage is functioning. But when I push the pedal to go forward or backward it does nothing. It's been sitting for the winter, today was first time firing it up. I did change tires/wheels on the rear recently. Ideas?

 

[springscapes]

Hi,

There is a key in the rear axel when the tire slides on, if that is missing or sheared could cause the drive to not spin the tires. It's usually a common keyway that you can get at any parts dealer.