Winterizing 7.4 efi on stand

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09-23-2012, 02:53 PM

JETTDOGG

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Winterizing 7.4 efi on stand

I have a 7.4 efi merc. Engine out of boat/on a stand. It was test run down south but now is in n my garage w/winter on its way.
What are the steps to getting water out of block,fuel cooler,etc...
Any tips and advice?

09-23-2012, 03:46 PM

obnoxus

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Disconnect all water hoses and drain plugs in block....

reassemble and fill with RV antifreeze through the thermostat hole in the intake for added security

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Last edited by obnoxus; 09-23-2012 at 10:01 PM.

09-23-2012, 09:50 PM

f_inscreenname

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I would just drain it. Like said, pull hoses, block and manifold drains and you are done.

09-23-2012, 11:19 PM

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Pull all the hoses and drain plugs (on exhaust manifold and block drains) and blow compressed air through them. I drain my block and exhaust after each use.