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  1. #1

    Default Water pump replacement

    I was given a 1978 850 mercury .I replaced the waterpump and replaced the lower unit. Is it normal for engine to be in gear after replacing lower unit ? I don't know allot about boat engins and don't want to start engine if I will tear something up. Please help.

  2. #2
    Join Date
    Sep 2010
    Posts
    18,012

    Default Re: Water pump replacement

    So you took the lower unit off in NEUTRAL.--------When you were not looking a bump on the unit and the spring loaded clutch put it in FORWARD.--------So remove lower unit.----Put throttle in forward.-----Assemble again.-----Or put lower unit in neutral with shift lever in neutral and assemble.
    Last edited by racerone; 12-11-2019 at 12:06 AM.

  3. #3

    Default Re: Water pump replacement

    Quote Originally Posted by racerone View Post
    So you took the lower unit off in NEUTRAL.--------When you were not looking a bump on the unit and the spring loaded clutch put it in FORWARD.--------So remove lower unit.----Put throttle in forward.-----Assemble again.-----Or put lower unit in neutral with shift lever in neutral and assemble.
    When I dropped lower unit it was in neutral when I assembled it it was supposed to still be in neutral . but was not .

  4. #4
    Join Date
    Sep 2010
    Posts
    18,012

    Default Re: Water pump replacement

    Clear facts for you.-----I know what happened.-----This happens to most novices.------The clutch dog in the lower unit is spring loaded and jumped into forward when you were not looking !!----Follow the steps in post # 2 --------Or rush to your local boat shop, explain and they can correct this in 15 minutes.

  5. #5
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    16,419

    Default Re: Water pump replacement

    That's why I never recommend the "Neutral" method.

    Jeff

  6. #6
    Join Date
    Sep 2010
    Posts
    18,012

    Default Re: Water pump replacement

    If you understand how this works there will not be an issue !!

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