I have a 21hp Craftsman. When mowing the grass yesterday the tractor suddenly stopped working - the blades stopped turning and the motor cut off. After disengaging the blades the engine started up with no problems. Now - when I attempt to engage the mower - the engine stops entirely. I've looked at fluid levels and the belt seems all right but I'm very mechanically inept. I was hoping someone here could help.

Thanks for your time.

Have you ran over something or hit a post, stump, or a root?