Winterize marine head

[eastont]

I have a 1990 Carver 2767 Santego and it has a Jabsco toilet. The way it works is you flip a lever to pump out to the waste tank, and then flip the lever to pump raw sea water to rinse/fill the bowl.

How would I go about winterizing the toilet?

I figure I'll fill the bowl with anti-freeze and pump it into the retaining tank....BUT here's my ignorance. How do I winterize the sea water part? How do I get anti-freeze into that line/hose/pipe?

Thanks in advance .

 

[SeanT]

Re: Winterize marine head

Do you know where the line runs from the sea water intake? If so, and if you can get the line off the hull fitting (i presume it's a hull fitting) and into a bucket of anti-freeze, it should suck enough through to flush it.

When I winterized my camper I used the same idea - just used the pump intake to circulate antifreeze into all the lines.