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Discussion Forum

Allis B-C magneto

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Dick L in NW Oh

11-16-1999 10:56:42

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Any magneto experts out there that can tell me how many turns the impluse spring is supposed to have. I tore down four mags and took the best parts and reassembled one. I put one complete turn on the spring. In a vise with one spark plug wire with a new spark plug, with plug held to the case, snaping over the impluse I got spark once. After 20 or so turns I put it on the tractor and cranked many times over and it only fired once. The coil has to be good or I wouldn't get even one spark and the one spark I saw was blue. The armature looked clean and it had a strong magnetic pull. The spring is the only part that I can think of that might be a problem or am I missing something.

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