Why is my Cub cadet 1515 Breaking deck belt?

I am having the same problem, and I don't know the answer. Logically, the belt was threaded incorrectly, one of the spindles is not turning easily, or a gremlin is on the loose. In any case, I need to get another belt. This last one lasted only ten minutes or so. :-(

Check for lose bolts on spindle mounts , all bearings , bent pulleys, rope or other debris around shafts or it could be low grade belts.

Hope this helps.