Reply To: 64 Johnson 5.5 hp Powerhead Base Gasket Problem

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June 20, 2020 at 9:10 pm #206237
Dale
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    Another couple things to check. Make sure the water in your test tank is above the water pump housing. Someone has posted on this website that OMC recommends to take the cover off the side of the lower unit when running motor in a test barrel.

    dale