Reply To: 64 Johnson 5.5 hp Powerhead Base Gasket Problem

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June 22, 2020 at 1:06 pm #206403
jerryswiss
Participant

    Ok, I have tested this motor every way I can think of.

    1. Lower unit off, put in bucket, drill on drive shaft. It pumps water even at low rpm.
    2. Lower unit on lower leg, everything but the power head, drill on drive shaft. Pumps water up to gasket even at low rpm.
    3. With thermostat out, it has been out all along, checked all water passages in head by pouring water in them and blowing with air hose, including hot water evacuation to the tell-tale. Everything seems open to me.

    Hmmmm, why is this motor overheating?