The tiller should be a Yanmar RS1000. That's what came with both of my YM1110D's. I think the shaft is common to the YM1301, YM1401, YM1510. Since you have to buy a tiller pto shaft, I would seriously look at converting the tiller to 3pt. That way it will take a longer pto shaft, but I think it should be a standard piece. It also gets that 2pt mount off the back of the tractor where it interfers with the 3pt (if you have 3pt hitch). If you need digital photos, I can get some of mine.