"When I spoke with the people in parts, I was told when the conversion was done (if it was done properly), the starter should have been rewound for a 12 volt system, and the ground polarity reversed, from a negative ground to a positive ground."
The parts people are wrong. If your 340 came with 6 volts (IH was changing to 12 volts in 1958), it was positive ground. A 6 volt starter works fine with 12 volts, no rewiring is necessary. I assume you have an alternator, if so it HAS to be negative ground. If it has a 12 volt generator, most are negative ground, but it will work with positive ground also-the generator must be polarized no matter what the ground is. You do not polarize an alternator. If your ammeter shows discharge with the engine running AND charge with the lights or ignition on and the engine off, reverse the wires on the ammeter.
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Today's Featured Article - Choosin, Mounting and Using a Bush Hog Type Mower - by Francis Robinson. Looking around at my new neighbors, most of whom are city raised and have recently acquired their first mini-farms of five to fifteen acres and also from reading questions ask at various discussion sites on the web it is frighteningly apparent that a great many guys (and a few gals) are learning by trial and error and mostly error how to use a very dangerous piece of farm equipment. It is also very apparent that these folks are getting a lot of very poor and often very dangerous advice fro
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