Re: Mercury Mark25 water pump service

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March 6, 2017 at 2:10 am #53916
fisherman6
Participant

    US Member

    Thanks Dave! That’s what I was hoping for. I figured I’d need to make a tool to remove the cover. Right hand threads and pUT it in forward before dropping the LU. Excellent! Thank you again. I’ll call you if I have any trouble when I get to it. It may be next weekend. I’m working on the water pump on my 1978 Merc 4hp now. New impeller a year ago and it stopped pumping. Impeller already had so much set it wouldn’t contact the sides of the pump housing. 😯
    -Ben

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