Re: 1940 Johnson HD-15 Magneto testing

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June 25, 2017 at 1:23 pm #60291
joesnuffy
Participant

    If it doesn’t have 2 lobes then you would mark flywheel 180 degrees from the other mark. Piston would be toward top of cylinder for that respective mark. You may not need to run engine you might use an electric drill or something to spin flywheel while checking.

    Joe

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