While using my 9n tractor my battery went dead. I realized the battery was not being charged while it was running. Thinking it was the battery, I bought a new battery, but that didn't fix the problem. I changed the voltage cut out, no luck. I think I need a new generator for the tractor. Where is the best place to get reasonable parts for the tractor. How do you find part numbers. I think I have a 1946 -47 tractor. Serial number 9n-243131. Most catalogs don't list the later year models for parts. Any help you can give me, I would appreciate it.