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Winterizing a Jabsco Raw Water Marine Toilet

If you have a marine toilet that draws water from outside of the vessel to rinse the bowl, then you'll want to winterize your system before temperatures dip below freezing. Here we walk you through how to winterize your system, including the separate intake pump. Though system configurations widely vary, this video demonstrates how to winterize a Jabsco Quiet Flush or Deluxe Flush marine toilet.

Winterizing a Jabsco Raw Water Marine Toilet 4:18

Jeff: Thanks for watching jabscotech.com. I'm Jeff Lander.

Mike: And I’m Mike Irving.

Jeff: And today we're going to show you how to winterize your raw water Quiet Flush and Deluxe Flush series toilets.

Mike: Now these toilets are fed with a diaphragm pump. At the end of the season, you need to winterize that to make sure that we don't cause any damage from freezing water. First things first, we'll locate the pump. Sometimes it's in the bilge, sometimes it's behind the console or cabinet. Once you find it, that's when we're going to step in and show you how to winterize the system. Let's head out to the boat and we'll show you how.

Jeff: So now we’re here on the boat and I'm going to show you how to winterize your saltwater flush, Quiet Flush, and Deluxe Flush toilets. Make sure we have our Par-Max fitting handy with that short piece of hose and our antifreeze. And now I'm going to dive in with my screwdriver and disconnect that port fitting. Here we have the rinse pump for the Quiet Flush. Here's a little clip, and now I'm going to take that off and put the new piece of hose on there. With my screwdriver, I'm going to loosen the quick-connect fitting here. Once you hear it snap, it means the port is ready to come out. It's loosened. I take out the port fitting; lookout for some residual water in there. Now I take my other Par-Max fitting, slide it on, push the clip back in, and now I take my hose and run it into my jug of antifreeze right here. Once that's done, time to go up and run it through the toilet. Let's go.

So now I'm in the head compartment and we just winterized the diaphragm pump that brings the water into the toilet. What we're going to do here is we're going to pull the antifreeze from the diaphragm pump into the head compartment and out to your holding tank or overboard discharge. We're going to run the toilet, and you may see some water in here either still pulling some residual water from the hose line into the toilet. You should start seeing some of that pink antifreeze shortly. Now you can see as it starts to become pink; the antifreeze is being brought into the toilet. And we're just going to hold it and bring all the antifreeze through. Now, what you want to be aware of is probably going to take a couple of gallons of antifreeze to do your complete system. We definitely want to make sure your entire discharge is winterized. Now, for instance, if you have 4 feet of lift or 4 feet to run in the inlet hose line and you have something like 8 or 9 feet in the discharge. You want to make sure you get all the way through the discharge hose line and into the holding tank or overboard.

Mike: That was pretty cool. We spent the afternoon down in Salem, Massachusetts. We got ourselves into some tight places. But you know what? It was worth it. We were able to show you how to winterize one of toilets. Jeff?

Jeff: Yeah, for your sake, I hope the diaphragm pumps are in more an accessible area than ours. You know, I had to wiggle around and get in there into some tight places and I was sore for a couple of days afterwards, but honestly, it's really not that hard of a procedure. Two things I want to make you aware of is one you still have to winterize the inlet hose between the diaphragm pump and the seacock. The way you do that, disconnect the hose, off of the inlet of the pump, pour some of the propylene glycol down in there and reattach it to the pump. That will essentially winterize that inlet hose. And the other thing is when you're going through this, make sure you have a couple of gallons of that propylene glycol handy because what you want to do is you want to make sure you get all of that glycol into the pump, into the toilet and all the way down your discharge hose line, either into the holding tank or the overboard discharge.

Mike: Two gallons, sometimes a little bit more, but it should be enough. Thanks a lot for watching this episode of jabscotech. I'm Mike Irving.

Jeff: And I'm Jeff Lander.

Mike: We'll see you back soon for more videos.