If you give me your e-mail address, I can mail you a copy of what I have.
Also, if your trying to take one apart, you have to reach into the exhaust port to remove the wrist pin retainer and pull out the wrist pin and remove the piston to get the crank and rod assy out.
They're a different animal than a hydro motor.
Also a trick to put it back together. I made a tool to install the retainers,makes it a lot easier.