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  1. #1
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    Torque Master Questions

    2021 200 Pro XS
    #3B051079

    What are the 4 holes on the front of the gear case? Additional water intakes? When running the engine with hose hook up water comes out of them.
    Jim
    Old Guy
    2021 Z19 Pro

  2. mikesxpress
    Guest
    #2
    I duct tape the nose cone holes so the water from the ears stays in the cooling system. Don likes to use a tank filled with water

  3. Member
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    #3
    Quote Originally Posted by mikesxpress View Post
    I duct tape the nose cone holes so the water from the ears stays in the cooling system. Don likes to use a tank filled with water
    I think this is the best solution but requires a good sized tank.
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  4. mikesxpress
    Guest
    #4
    I run my 3 hole like this with no overheat issues. 5/8" commercial hose off full pressure well water.
    It fully cycles thru the thermostat opening process.

  5. Member
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    #5
    Got it! Part of the water intake.

    Thanks for the input!
    Jim
    Old Guy
    2021 Z19 Pro

  6. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Apr 2008
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    Greenville, SC (US)
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    #6
    Duct tape works... just be careful not to forget to remove it (and be careful not to peel the paint off the gearcase when removing it).


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
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  7. Member thommo59's Avatar
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    Apr 2017
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    #7
    I use 2 prices of thin rubber hose and plug the holes when flushing, just pull them out when finished and I’m in salt water 95% of the time
    2018 TRX 18. 2020 Mercury 200 Pro XS V8