I have a 6210 that i have had only a month or 2. The tractor is 540 only. The PTO quit a couple of days ago. I was using the discbine and it just quit just like you turned it off. It would not come back on. I took it back home and after unhooking the discbine the PTO would come on/turn for about 3 seconds and quit again. I have not had time to hook something back up to PTO shaft but i am betting it would not even try to work like it done when it quit in the field. Where do i start to repair?