"One reply said that the bypass circuit in the CDI box fails. The box is sealed, and not serviceable. It still puzzles me why a magneto type ignition would do this. Separate circuitry from the battery/starter side of the system."
I DONT KNOW THE ANSWER
However I'm going to think out loud here as to possible reasons why..........
Even though a typical Magneto like on our old tractors has its very own magnetic rotor and stationary coil into which voltage is induced by the rotating magnet, PERHAPS?? the circuitry on your Honda uses the stronger stator coil windings (probably more energy then a single magneto) to pump current into the CDI box which charges the capacitor which a signal then causes to discharge a current spike into the ignition coil which produces the spark?????????????
I say that because I faintly remember something about a bad start can cause a weak spark????
Maybe some of the more current ELECTRONIC gents like JMOR and Soundguy and Bob and drsporster and others have some insight into it BECAUSE I SURE DONT (Im more into electrical then electronic) just thinking out loud here........
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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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