We've got an older (1995ish) M5400 at our hunting camp. The starter was on it last leg, so we went ahead and bought a new one from our local dealer and also got a new battery since none of us could remember the last time we changed it. Anyway, got everything back on and when we hooked up the battery the starter just starts spins like we're trying to crank the tractor. We immediately disconnected the battery not wanting to burn up the new starter. We've tried cleaning all the terminal connections, made sure none of the fuses (that we know of) had blown but it still does the same thing. I'm a believer in the fact the simplest explanation is usually the correct one, so my thinking is we somehow hooked up the starter incorrectly. We've got the service manual but there's not a ton of info in there on how to correctly hook up the starter. I should have taken some pics before I took it off the tractor but too late for that. Any help here is greatly appreciated.