Thank you all, the information that the front PTO is a husqvarna supplied part helps a lot. I can now measure the length and diameter of the shaft and narrow it down to a particular motor if I do in fact want to buy a new one. As to the question of what happened. I am embarrassed to say that it...
I have a Husqvarna ZTH5223 which I believe is a 2000 model year. The engine was leaking oil while my son was using it and the engine now has a hard to turn spot. I would like to either buy a new engine or have this one rebuilt but all the tags are gone. I know it's a 23hp Kohler command pro...