Re: Mercruiser 4.3l TKI water drain plugs Re: Mercruiser 4.3l TKI water drain plugs Do you have an engine serial number. Did you mean TKS instead of TKI ? Might have a look at the bottom of the large hose coming out of the engine circulation pump.. The 4.3 Mercruiser engine is a popular inboard motor for boats. It is equipped with four 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 occur over the cold season.
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Location of drain plugs on 4.3 l Merc-gctid662697 07-02-2015, 10:55 PM. So I went to change the anti-freeze on the closed portion of my 4.3 today, and could not locate the block drain plugs. I know the approximate location, just under the #5 and #6 exhaust ports, but it's so tight in that area that I cannot locate them, never mind being able to.. Mercruiser Sterndrive Forum . 4.3LX 88 drain plugs. Thread starter JoshNZ; Start date Jun 8, 2016; J. JoshNZ Member. Jun 8, 2016 #1 What thread are the drain plugs in each side of crank case and bottom of exhaust manifolds?. What thread are the drain plugs in each side of crank case and bottom of exhaust manifolds? A boat I'm using has a.
