In Reply to: Starter posted by JR in AR on October 07, 2018 at 13:29:51:
Is your tractor 6V/POS GND or a 12V/NEG GND switch over job? Either way, is the entire wiring system correct? Starters don't care if 6V or 12V, pos or neg ground, but, if not wired correctly, you will have issues. Is the starter the correct 1-Wire/3-Brush unit and NO SOLENOID? You said you bought a used one on ebay, installed it and it started right up. That may or may not have fixed the problem but you don't know for sure, you could have wiggled a loose wire or made a better connection. If you have no plans with the old starter, let me know as I would buy it if it is OEM. You could have just had the old one tested at a starter/alternator shop and if bad, they would be able to rebuild it. These old FORDs were designed so major components could be rebuilt over and over. Best to do this than buy anything new/aftermarket sold today. My email is open.
FORD 9N TRACTOR, AFTER S/N 12500, AND ALL 2N MODELS, OEM WIRING DAGRAM: