Marine Head Operation
Marine Head Operation
Hi All,
Recently acquired a 2009 276 with a Domestic Brand manual flush marine head [picture attached]. Didn't get a good walk thru with previous owner and the manual is no help whatsoever. I can't figure out how to operate the thing and would love some help! I know I have to get water to it which must be via a seacock valve but can't figure out where that is... doesn't seem to have a flush pedal so also not sure how to flush it... Assume that little pump on the upper left of the toilet is to fill the bowl with water... not sure what is under the little cap on the upper right top of toilet.. Help!!
Recently acquired a 2009 276 with a Domestic Brand manual flush marine head [picture attached]. Didn't get a good walk thru with previous owner and the manual is no help whatsoever. I can't figure out how to operate the thing and would love some help! I know I have to get water to it which must be via a seacock valve but can't figure out where that is... doesn't seem to have a flush pedal so also not sure how to flush it... Assume that little pump on the upper left of the toilet is to fill the bowl with water... not sure what is under the little cap on the upper right top of toilet.. Help!!
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rabiddawg
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Re: Marine Head Operation
If yours is like mine, the upper left thing is a pump for bowl water. There is a reservoir for clean water in the unit. The flush is done by pulling the handle in the middle.
I carry mine out of the boat to dump since I don’t know how nor do I have facilities to pump it out. I have similar hoses to yours.
Side note. My flush valve was stuck therefore it confused me as to how to flush. I took it out, saw how it worked and freed it up.
I carry mine out of the boat to dump since I don’t know how nor do I have facilities to pump it out. I have similar hoses to yours.
Side note. My flush valve was stuck therefore it confused me as to how to flush. I took it out, saw how it worked and freed it up.
2003 262 8.1 Volvo
- AsLan7
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Re: Marine Head Operation
.
Hey Pnwb...welcome to the Cobaltchat forum. So glad you found us!
Yes the push-pump plunger knob on the left swirls water around the bowl which allows the crap to run into your waste tank after pulling that handle out located on the front of the unit. Water is supplied by you filling the potty tank first after removing the cap on the right.
You’ll have to get your waste tank pumped out at a pump station located at most marinas.
Any other pics? How is she powered?
Again welcome aboard mate!
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Hey Pnwb...welcome to the Cobaltchat forum. So glad you found us!
Yes the push-pump plunger knob on the left swirls water around the bowl which allows the crap to run into your waste tank after pulling that handle out located on the front of the unit. Water is supplied by you filling the potty tank first after removing the cap on the right.
You’ll have to get your waste tank pumped out at a pump station located at most marinas.
Any other pics? How is she powered?
Again welcome aboard mate!
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2002 Cobalt 262
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
Re: Marine Head Operation
Ahhhh, ok! Now we're talking! So do you want to add any chemicals to the flush water to keep things under control between pump outs?
Next bathroom question.. the sink: I see the water pressure switch by capt's chair and the light turns red when I flip it so think its got power. When i turn the water on in the head for the sink, it sputters but no water comes out... again i am figuring i need to get water into a tank somehow... Thoughts?
Thanks for the warm welcome! Pretty excited about the boat. It's got the Merc 496 MAG with Bravo three outdrive. Great power, smooth ride. Kids and adults loving it so far.
Next bathroom question.. the sink: I see the water pressure switch by capt's chair and the light turns red when I flip it so think its got power. When i turn the water on in the head for the sink, it sputters but no water comes out... again i am figuring i need to get water into a tank somehow... Thoughts?
Thanks for the warm welcome! Pretty excited about the boat. It's got the Merc 496 MAG with Bravo three outdrive. Great power, smooth ride. Kids and adults loving it so far.
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rabiddawg
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Re: Marine Head Operation
Find your tank. My 262 is in the engine compartment on the port side. There is a bung? on the side of my boat for water. It looks just like the fuel fill bung.
2003 262 8.1 Volvo
- AsLan7
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Re: Marine Head Operation
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Yes fill your water tank with a hose. The cap will say water on it.
We don’t use our head so we don’t use any chemicals. Never hurts though. Check out the RV department in your local Walmart. You can purchase some potty chemicals and flushable toilet paper there.
Thanks for the pics!
Yes fill your water tank with a hose. The cap will say water on it.
We don’t use our head so we don’t use any chemicals. Never hurts though. Check out the RV department in your local Walmart. You can purchase some potty chemicals and flushable toilet paper there.
Thanks for the pics!
2002 Cobalt 262
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
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282Captain
- Commander

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Re: Marine Head Operation
Great thread. I have a putty too. S never used it before. I’m thinking this year I want to use every option I got. Why not. So, thanks for posting this thread.
Captain “Action Andy” 282
Twin 496mag HO’s
Oklahoma
Twin 496mag HO’s
Oklahoma
Re: Marine Head Operation
Okay! back to this topic: With all of your help, figured out how to fill the flush tank on the head, how to fill and empty the bowl. Here is the next issue: the holding capacity of waster water in the head itself is full.. I imagine i have a holding tank somewhere in the boat with a greater capacity that i can send the waster water too, but can't figure out A) how to locate this holding tank and B) more importantly, how to send waste water into the tank. I can see no additional levers or pedals or any electric flush options. Is it possible that I don't have a holding tank and the capacity of the head itself is all I got? Reposting pic of the head... i can see two tubes leading out of the head to... somewhere. I have also located the waste pump portal at the front of the boat in anchor compartment.
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Re: Marine Head Operation
We have a similar setup on a new R6. As I understand it, the holding tank is the bottom of the potti where your hose run into. There is no other holding tank. So there is a very limited amount of waste you can hold before your have to get it sucked out through the port. I don’t know how much these hold but I guess only a couple gallons. I guess you can tell it’s filling up by opening the flusher and taking a peek.
- AsLan7
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Re: Marine Head Operation
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Yes the holding tank is under the toilet. It holds maybe a gallon or two.
Other boats have larger tanks. Yours is combined with the portable head.
Yes the holding tank is under the toilet. It holds maybe a gallon or two.
Other boats have larger tanks. Yours is combined with the portable head.
2002 Cobalt 262
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
Re: Marine Head Operation
Thanks, Both! This is super helpful. Pumpouts run $35 a pop so I guess we need to be more judicious about when we use the head vs.. other means
Love this forum! Thanks again.
Love this forum! Thanks again.
Re: Marine Head Operation
Or...just switch it out to a portable head. Yours may already have that option unless its just a one piece head.
They are cheap
https://www.dometic.com/en-us/hygiene-a ... veEALw_wcB
We used to have one that needed to be pumped out. Why we never pulled it out is a good question. My last boat had a portable and the boat I have right now is a portable. So easy to just take the bottom part and pour it into a toilet.
EDIT: If you have the Dometic 962, it is actually a portable version that can be modified to be pumped out. You may be able to plug the pumpout and vent fittings and use it like a portable toilet.
They are cheap
https://www.dometic.com/en-us/hygiene-a ... veEALw_wcB
We used to have one that needed to be pumped out. Why we never pulled it out is a good question. My last boat had a portable and the boat I have right now is a portable. So easy to just take the bottom part and pour it into a toilet.
EDIT: If you have the Dometic 962, it is actually a portable version that can be modified to be pumped out. You may be able to plug the pumpout and vent fittings and use it like a portable toilet.
2017 R5 350HP Mercruiser Bravo III
Northridge, CA
Big Bear Lake, CA
South Lake Tahoe, CA
Northridge, CA
Big Bear Lake, CA
South Lake Tahoe, CA
Re: Marine Head Operation
Great idea! I believe it is a portable version that has been modified... i have seen the "pour out" cap on the back at the bottom...
Re: Marine Head Operation
Wow $35! I haven’t pumped out this year but last year we paid $7. I usually give them a $20 and say keep the change because the kids on the dock don’t exactly come running to pump out a head...pnwboater wrote: Mon Jun 07, 2021 7:52 pm Thanks, Both! This is super helpful. Pumpouts run $35 a pop so I guess we need to be more judicious about when we use the head vs.. other means![]()
Love this forum! Thanks again.
- Krob1114
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Re: Marine Head Operation
Kids at our marina sit around a lot playing cards and such. I very seldom see anyone pumping out their head, so all they do is pump gas. Great bunch of kids and we usually tip on fill up...but federal government ruled that since our marina is on a Corp of Engineers lake, they have to make federal minimum wage, which is much higher. Marina raised the cost of gas and rental slips to cover it. Wish I could have had a summer job like that when I was in late high school or college.Snowman8 wrote: Sat Jun 12, 2021 6:19 amWow $35! I haven’t pumped out this year but last year we paid $7. I usually give them a $20 and say keep the change because the kids on the dock don’t exactly come running to pump out a head...pnwboater wrote: Mon Jun 07, 2021 7:52 pm Thanks, Both! This is super helpful. Pumpouts run $35 a pop so I guess we need to be more judicious about when we use the head vs.. other means![]()
Love this forum! Thanks again.
Smart one might realize that learning to handle waste pays more. Plumbers, hazard material handlers, etc.
2019 Cobalt R3 @ Greers Ferry Lake, AR
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