Re: Mercury 50 hp 1967 no spark

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May 3, 2016 at 10:23 am #35878
billw
Participant

    US Member

    If there is no center, fifth wire on the distributor cap, then the coil is inside the distributor. If there is a fifth, 7 mm wire in the center of the cap, it will trace back to a single coil. Not sure when the 500 went to electronic ignition without going by serial number; but it was around 1967ish…..

    Long live American manufacturing!