I do have a manual ill have to get for you. as far as the line hookup. the pump is under your feet hooked to the back of the hydrostatic pumps. The loader pump uses a "sump" type system. It has a line with a hydro filter attacked. There is no filter head. Just the center threads. The pump pulls oil through the outer holes on the filter through the larger center hole up to the pump. Then as you sit in your loader and you look at the foot valve, there is a hose on the left side that comes out of the floor and then to the relay valve. Your pump has a hose that goes and connects to that point in the floor. Then it rolls up to the relay valves. When the fluid drains back to the tank, it will drop from the fitting on the right side of the relay valves back into the loader body. Lahman used the hydro oil to keep the pumps cool and wheel bearing and chains lubed. its was all teh same oil. very simple design. great little loaders for sure. I just missed out on a lahman 50 that i would loved to get my hands on.