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billw
Participant

    US Member

    I had a Merc 200 automatic that preformed in a similar way. It had the right main jet in place, by the stamped number; but someone along the line had enlarged the HOLE with a drill, just a bit. When I finally figured that out (after a couple of YEARS) I robbed the jet out of another carb and the thing ran like the wind. Totally different engine, in terms of performance….

    Long live American manufacturing!