I have a 1200 cub cadet, new to the whole working on tractors thing, but it's in my blood. My father did it for years. And I got into Cubs because of him. And now have a wide variety. One in particular, a 1200 cub cadet, I'm having issues with. The PTO stopped suddenly while I was mowing. I have replaced the fuse and pto switch, the belt is good, and all pulleys will move. I have turned them manually. I am at a loss as to what to do from here. Thank u in advance for any suggestions