I have a Rhino International 344 and the PTO will not engage. Bought it this way. It supposedly has a two stage clutch. I set my PTO speed control in either speed and engage the right hand side PTO lever, nothing. With the tractor off PTO engaged clutch out the shaft spins free in both speeds. I assume it is a yoke linkage problem in the transmission, below the cast steel hydraulic tank, below the seat. So I cannot find a shop manual anywhere but if I drain the Hyd.tank disconnect the inlet and outlet tube, lift it with a hoist what can I expect to still be hooked up to the tank? If I can finally get to the linkage, fix it, how much of a magic act is it to get back together, is it open on the bottom of the Hyd box to the top of the transmission? How much trouble is there to bleed the Hyd. system and get itall working again? Thank you anybody that has been to the belly of beast the and lived to tell the story.