There are 6 that i remove before winter each year.
How many drain plugs mercruiser 5 7.
I removed the drain plugs from both exhaust manifolds from each side of the block.
Make sure that when you remove the drain plug that the water drains and that the passage is not plugged with rust.
For stern drive and inboard engines such as mercruiser models the drain plugs are either brass or plastic.
In il i used to do a full winterization but with the shorter milder winters here in nc this is pretty much all i do.
Winterizing mercruiser 5 7 draining all the water too old to reply kevin c smith 2005 12 13 22 27 28 utc.
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On holiday had asked me some time ago for pics of where my drain plugs are in my 2000 mercruiser 5 7l engine in my cobalt 206.