Reply To: 1961 Johnson 40 (RDSL-23) stops pumping water

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July 29, 2021 at 3:32 pm #243894
David Bartlett
Participant

    US Member

    Did you check the screen and the area just above it for blockage. The holes in the bypass plate may allow the pump cavity to fill, so that it appears to pump when you first start it. If the screen is plugged up, it won’t allow pumping much above idle for very long. Something to look at?

    David Bartlett
    Pine Tree Boating Club Chapter

    "I don't fully understand everything I know!"