Reply To: Rubber plugs on each side of air chamber on 1955 Johnson CD-12 Purpose?”

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March 23, 2026 at 4:05 pm #311667
Don
Participant

    US Member

    OK, I see now, and agree with you.  Needless to say, those plugs are not part of the original engine and do not belong there.  Like you say, someone probably added them in an effort to keep critters out.  I would remove them and leave them out to avoid confusion.