If it is running you can assume the ignition is working. If it has a magneto ignition it is a self powered system that has no battery power hoked to it at all. It has a small internal generator inside the housing that with other parts makes timed spark to each plug. It is recognized by being an all in one unit. The Cap from which the spark plug wires originate has a center terminal connected by a short spark wire that goes to the rounded cover on the top of the unit. A distributor will have that wire going to a separate coil on a different bracket. (usually a cylinder of some description. A mag is connected to a kill switch that grounds the mag side terminal, shutting off spark. A point and coil distributor has power going to the separate coil from the ignition switch. On Farmalls the switch for both look the same from the button point of view, but one is a grounded switch with only one terminal, and the other gets power from the amp meter and has two terminals. The trouble shooting guide included will help. Jim
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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