2006 6.2l Mercruiser winterization question

Discussion in 'Winterizing' started by Bwoz, Jun 25, 2018.

  1. Bwoz

    Bwoz New Member

    9
    Jun 24, 2018
    2006 240 SD 6.2L
    Mercruiser 6.2l Bravo lll
    Can anyone please tell me where the water plugs are that I need pull to make sure the engine is completely drained.
    Once I drain the water out of the engine, I plan to run some West Marine -75 degree anti-freeze fluid through it.
    Is there somewhere where I can see a diagram of the plugs?
    Thank you.
     
  2. aerobat77

    aerobat77 Member

    354
    Aug 12, 2014
    germany
    2006 240 DA Sundancer
    5.0 MPI / Bravo III
    there are several systems that you may have installed but most probably you have the vent plug on the tstat , the lower drain plug on the distributor and two plugs on the raw water pump.
     
  3. Espos4

    Espos4 Active Member

    379
    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    Removing the plugs is one thing...making sure everything drains is another.

    With a Bravo 3 and cool fuel 3, you probably have 5 plugs.
    1. Water distribution housing, located down low under the P/S pump
    2. Thermostat housing
    3. Cool fuel housing

    There are 2 more on the raw water pump housing that you cannot see but must feel for.

    I like to remove the quick connects from the engine block to ensure that it drains. Sediment can build up and block the small hoses the serve as the block drains giving you a false impression that you drained the block by removing the water distribution housing plug when actually there may be water still in there.

    Enough winterization talk..........lets go boating!!
     
  4. Bwoz

    Bwoz New Member

    9
    Jun 24, 2018
    2006 240 SD 6.2L
    Mercruiser 6.2l Bravo lll
    Thank you. Is there a diagram where I can find these plugs?
     
  5. Espos4

    Espos4 Active Member

    379
    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    Google is your friend.
    I’m sure you could find a bunch of photos there. I don’t have any off hand.
     
  6. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    If you have a 3 point or 7 point drain system, remove the quick connects from the block and probe the holes to make sure it drains the block.They get clogged with scale and the block cracks
     

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