Posted by Bob on April 10, 2018 at 12:15:55 from (64.255.159.199):
In Reply to: Little M Coils posted by TheFordGuy on April 10, 2018 at 11:48:10:
The photos you linked are of a MAGNETO. They are self-powered are NOT affected by converting the starting and charging systems to 12 Volts. The wire connected to them goes to a switch that shorts it to ground to stop the engine as needed.
REPEAT.... If your tractor has a magneto, there is NO connection between the ignition and charging/starting systems, and attempting to feed battery power into a magneto will cause seriou$$$$$$$ damage.
(Sometimes broken magnetos have been converted to distributors/battery ignition systems,but at this point we have no reason to believe yours has.)
Was the tractor previously running? If so, now you are faced with putting the mag back together and getting it correctly timed to the engine.
Should have asked this question before removing it!
For your assistance, here's a link to the official IH Blue Ribbon Magneto manual, giving repair instructions and explaining how to install/time your H-4 magneto to your engine.
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