It's a 206 engine, used in lots of MM smaller ag tractors and some industrial applications. "Ampli Torque" is MMs name for the high/low gearing. If yours has it, it was an option, the shift handle will be sticking up out of the righthand side of the transmission. Can't tell from your picture, does it have 3 point hitch or is that the "type E" hyd? A manual would tell you what you have and "maybe" answer your questions. Add a picture of the rear then maybe I can see and explain the hyd system. Thanks, John