Does your John Deere have a coil? Or can it be a magneto unit? If you did a tune up and did a tne up in the magneto unit you should had replace these parts. Points, condensor, the points open to send a spark to your spark plug these should be set to a open gap seting when the cam lobe opens them. The condensor keeps the pionts from pitting or shall we say it cushions the arking of the pionts opening with current. Now if you have a 12vot (Distributor) you should have a coil. The coil is a unit with two windings inside it. These are primary winding (low ) and a secoundary winding (high). They only way to test it is really there is no test. You have to have the right equipment for that test. I would go by the age of it and if it is getting hat after the engine warms up. Good example is when the engine is cold runs great if coil gets hot and the engine starts to miss the coil is no good.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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