Re: Evinrude 3 hp and Johnson 4 hp overheating

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August 10, 2018 at 1:19 am #80898
frankr
Participant

    Depends on where you are checking it. The flat exhaust cover is only water cooled on the edge and has fire behind it, so it gets blazing hot.
    Likewise, the cylinder head is only cooled around the edges and the center portion around the spark plugs gets very hot.