Good list, Old Machinist! I just bought an 863, had a dealer run through most everything on OM's list, plus a couple others. I had them check the aux hydraulics pressure and flow, and make sure all zerks took grease (I think there should be 12 on the 743). The zerk on either side that lube the bobtach pins are almost hidden. Check the lift arms as they come down and contact the stops to see if the arms are twisted (the sides should bottom out at almost the same time). Lift the arms up a bit near a visual reference point, then wait 2-3 minutes to see if they drift down. Same with the bucket, see if it droops down in a few minutes. Does it creep when it's idling (probably not a big deal, but something to check). Pull the air filters and look for dust on the innermost parts past the filters - if it's dusty, this is a really bad sign (don't ask me how I know this), but it'll probably have compression in the 300psi range (too low) or worse. When you have the cab lifted (remove the 3/4" nuts on either side of the cab, just forward of your knees), look for about 5" of dirt below the hydraulic lines in the bottom of the central compartment. If the hyd fittings are sitting in wet dirt, they'll be rusted and really tough to loosen up if you ever have to work on them. Just my ideas. I usually buy someone else's problems, and I'm a slow learner: I've gleaned these ideas from my poor judgement.

---RC