is the belt intact? If so, does the clutch get +12v and ground at the connector? If not, find out why (relay, wiring, etc). If so, the electromagnetic clutch is bad.
if no 12v at the clutch, check fuses. all good? take the front panel off, sits where your heels are. Behind that panel is 4 relays. Swap them around and see if another function doesn't work, like won't start or something....if that's the case, you h ave one bad relay. I had to put a bunch of them in at the shop.