I have and older Craftsman GT riding mower that I got for free. I recently broke my v-belt, the one that spins the pully gear on top of the deck. I called Sears and they said that they could not find a replacement belt because they don't make a deck for that mower anymore (model # 917-253740). The gal could not find the right belt for my mower on her computer. Can anyone suggest where to find it? Or a belt that will do the job just as well? Thanks.