Re: 1969 Mercury 4 hp Model 40

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June 22, 2016 at 9:39 am #38744
billw
Participant

    US Member

    Thinking about this some more, can you SEE the throttle valve open up at full magneto advance? You should be able to see the throttle cam follower working on the cam and it should go nearly to the end of the cam.

    If my first two ideas are a bust, then maybe the points closed up, from wear, during the run and need to be reset. That can do weird things, too. My money is still on the jet coming loose, though…..

    Long live American manufacturing!