Winterizing a G23 with a heater

[Paul W]

On the H5/H6, they will all have the blue plugs and are super easy to drain. Takes all of five minutes. The only thing that doesn't have a plug is the heater, and that just requires disconnecting the two red hoses and introducing air pressure into either one to force the water out of the other.

Here are the drain locations for the H5 and H6 (NON-Coastal):






Here are the drain locations for the H5 and H6 (Coastal):



Note: If your boat is a Coastal Edition, there is no need to winterize the heater because it will have antifreeze in it already.

Hi All,
I have a new to me 2017 SAN 230 with the H5 Coastal closed cooling. I have been looking for the Number 1 Location Raw Water Inlet manifold hose plug. I see it on the above diagram that Jeff posted. When I look at the cooling System parts list for the H5 H6 coastal addition it is not a part that is shown or any part numbers, page number 24 or 26.
It is however shown on page 22 open loop cooling diagram and it has a part number.
Is this number 1 manifold plug not on the coastal closed edition engine? Just making sure that I get all the water out in Northern IL
Thanks for the feedback,
Paul