docholiday52 0 Posted August 8, 2018 Greetings, I have a AC 620 Hydrostatic tractor with the original PTO at the back and have been unfortunate enough to have it split open due to the rototiller spline not seated and locked into place. Does anyone have a replacement for me or suggest a source? OR suggestions on circumventing the repair and modifying the PTO to drive the rototiller in another manner (Hydraulic?) Thanks Jim Share this post Link to post Share on other sites