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

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July 30, 2021 at 4:59 pm #243986
Don
Participant

    US Member

    I agree, you don’t want to lay out money for a gearcase if the rest of it is in rough shape….But, just cuz it “looks rough”, doesn’t mean it is…
    The water fills the outer exhaust cover first, then is directed down around the cylinder jackets……Once the water reaches the thermostat pocket and fills the cylinders, it is either directed out of the head through the thermostat, or if the thermostat is closed, the water is directed back down the the water pump through that little check valve….
    Do I have it “kinda right” Frank??