Remove the drain plugs located on either side of the engine block.
Mercruiser 4 3 l drain plugs.
Before boats are stowed away for the winter they must undergo a process known as winterization this means that the engine is completely emptied cleaned and antifreeze is applied so that damage does not.
For stern drive and inboard engines such as mercruiser models the drain plugs are either brass or plastic.
Thread on the plug is 13.
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The engine sucks water up from the lake through the impeller to cool the engine.
You must winterize your mercruiser 4 3l v6 before storing it.
It is equipped with four drain plugs.
Frequently bought together total price.
The 4 3 mercruiser engine is a popular inboard motor for boats.
Make sure that when you remove the drain plug that the water drains and that the passage is not plugged with rust.
This water does not automatically drain out of the engine.
Because water expands when it freezes it s imperative to drain the water from the engine.
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