I have a Simplicity 7016, The belt going from the PTO to the deck broke on me about a month ago, I figured it was a old belt so I replaced it, it made it through one mowing with issues, I went to go mow again yesterday and the belt rolled then broke. It is a super clean break, looks like it was cut in two with a sharp knife.
The bearings are all new in the deck, all the pulleys are tight and don't wobble, there is nothing out of the ordinary at least what I can see. Someone told me once that you have to run the decks on these mowers as low as they will go or they will break the belt, that doesn't sound right to me???
Anyone have any ideas???