stop by your local golf course shop and inquire for an old manual. they will buy 1 or 2 at a time and many will have a spar in the file cabinet somewhere. while there ask for demo on setting greens mower height. also you will need to learn to adjust reel to bed knife. very difficult to tell how to do this but easy to show procedure. i think the hydro takes textronII. hydro oil. ask local NAPA store for this. if you do drain system replace hydro filter also.