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Mornin Bill, Well, its a pretty wide question, so let me start with some basic info. The tractor was originally a 6 volt positive ground system with a battery powered coil and distributor ignition, a 6 volt generator utilizing a cut out relay (NOT a full fledged Voltage Regulator) and a single dash switch controlled the lights, ignition, and regulated the generators output via a wire down to the generators field post. Now, you say it has a "magneto" on the flywheel??? Sorry, I have no idea exactly what you mean or what you have. If its really a "magneto" and not a battery powered coil/distributor ignition, it wouldnt have or need any DC power hooked to it (might have a kill switch wire is all) and not need any voltage dropping ballast resistor feedign it either. If its really a battery powered distributor and utilizes a coil (internal or external) its posible its a 6 volt system and that ballast resistor you mentioned on the starter is actually an in line series resistor gettign its battery power off the starter connection, dropping 6 volts, leaving 6 for whatever its powering, which may be lights plus/or an ignitiion switch for an ignition system. You say the starter has a "reducing voltage resistor in line" but thats extremely unlikely, cuz if it were actually a resistor in the startign motor curcuit, it would have to be rated like near 1000 watts and would be hugeeeee e, expensive and hard to cool. More likely, it has a ceramic voltage dropping ballast resistor which are more like 25 watts and 1.5 ohms and 1/2 by 1/2 in by 3 inches which are used to reduce 12 volts to 6 when 6 volt coils were used on 12 volt tractors. MY BEST GUESSES. a) The ballast resistor you say in on the starter is actually a 12 to 6 voltage dropping resistor someone rigged which gets its 12 volts of battery power off the starter switch post and then was intended to drop 6 volts and feed 6 to a light or ignition switch or whatever. b) What you call a magneto may or may not be a true magneto (they dont use battery power), and if any wires off that ballast feed it, its probably a battery powered coil/distributor ignition which might be like a Wico XB distributor or other that has an internal coil. YOUR QUESTIONS YES, either a true magneto or a battery powered coil distributor will run the engine if its instaleld and timed corectly. YES, 6 volt parts are still available and the tracotr will be worth more if you take her back to the original type wiring. YES, you can still get a distributor and all its parts. YES, I will e mail you a generic M wirign diagram. MY QUESTIONS Does that what you call a magneto have any names or numbers on it??? Does it have a wire to it connected to that ballast resistor??? Are there any wires to it??? Did or does the tractor start and run ??? What brand or type is that alternator??? I assume youre at neg ground now right??? You dont have any distributor at all now??? Any ignition coil anywhwere???? What kind of dash switch does it have and how do you switch the ignition on or off now???? Look for my e mail and post back more info on what you have and that so called "magneto" and we will go from there. John T Nordhoff in Indiana
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