I have put new manifold gaskets and rebuilt the carb and put in a new air filter plug wires plugs and points. Added nearly 3 gallons of hydraulic fluid. Spent maybe $60 total. Thankyou ebay for parts. Run's much better. It's actually strong enough to lift a full load of dirt. It's also easier to tip over. So I am getting there. Not bad for a machine that someone gave me. I have a field at the back of my property that I need to push off the brush that has accumulated so we can plow again. I am almost confident enough to drive it back there. I'm pretty sure it will make it back. The thing still looks like it has been sitting at the bottom of a lake for 20 years, but IT"S workin. Is there a hydraulic oil filter and if so where is it. I have not been able to locate one.