Here is where I am. I picked up what I believe is a 610. I have not invested much thus far. I have a one-acre plot and wanted to use this for snow removal and some road grading. Remember that I have never owned or worked on these, and I am looking at it like a challenge/adventure. The 610 was running a few years ago. I immediately put a new battery in, changed all the plugs, wires, cap, rotor, and fuel pump, and then somehow busted the carb while rebuilding it. So, a new carb is in place, and I can start the engine without any starting fluid. It does run; however, I am waiting for a throttle linkage as the new carb differs. When the engine is running, I can use the pedals to lift and tilt the bucket when I move either the right or left control to move forward. Nothing happens. There is a lever to my left that seems like a hydraulic one. I push it forward, and it feels like how a level feels when a hydraulic line is maxed out. When I release it, it falls back into place. I also noticed the belt is not spinning, no matter what I do. I turned it off and noticed I had a nice puddle of hydraulic fluid. It looks milky, and I plan to replace it once I get it moving. The fluid is coming from the left rear side of the bobcat. I do not have any manuls and would love if someone could give me some guidance and where to go from here. Thanks in advance- Much appreciated!