Posted by fixerupper on August 24, 2017 at 14:32:22 from (100.42.94.143):
In Reply to: Wasn't paying attention posted by flying belgian on August 24, 2017 at 11:54:28:
With the points closed, open and close them with a screwdriver and see what happens. Make sure the screw driver does not touch metal when you do this. if there is no spark, use the screw driver to make ground to the points off and on, anywhere on the points will do. If you can make spark the points aren't making contact. The secondary, or big wire out of the coil should make a big long snapping spark while you are doing this. If there is fire at the points but no fire out of the coil then the coil is suspect.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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