2006 6.2l Mercruiser winterization question

Bwoz

New Member
Jun 24, 2018
9
Boat Info
2006 240 SD 6.2L
Engines
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.
 
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.
 
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!!
 
Thank you. Is there a diagram where I can find these plugs?
 
Google is your friend.
I’m sure you could find a bunch of photos there. I don’t have any off hand.
 
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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