I have a Husqvarna YTH2348 lawn tractor. We (my wife and I) were mowing the lawn. My wife turns of the tractor due to her getting stuck. After I assisted her in getting unstuck the tractor will not start. It sounds like the starter is turning, but the engine doesn't seem to be engaging.

I thought the battery may have been weak, so I used some jumper cables to aide in starting it. Still will not crank. The battery seems fine.

Any help is appreciated. Thank you.