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Old 03-30-2022, 11:34 AM   #1
NOWhineFullTime
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Two tanks, One Flush?

2022 3761FL

My 5er has two black tanks, one for the front toilet, and one for the back, with two dump levers. However, I noticed when using the power flush, only one of the tanks fills up.

When having one tank closed, it fills, but nothing comes out of the other one. Did Keystone really only design these campers with only one tank that has the power flush? Am I missing something?

I donít see anything in the owners manual and searched briefly online with nothing. Thanks!
 
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Old 03-30-2022, 01:20 PM   #2
rohrmann
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Just one flush system per tank. You can just drain the other, then add water and drain again to flush it. It's not really a big thing, many RVs never had any kind of flush system and got along just fine.
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Old 03-30-2022, 01:25 PM   #3
team bradfield
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agree with Bob, my first 3 RV's didn't have a flush system, I don't use mine every dump
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Old 03-30-2022, 02:01 PM   #4
Ahdmeyer
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my 3931 fb has 2 black tank washes. the one is kind of hidden in the water closet top right and i dont think it was labled. if need i can send a picture later what mine looks like just let me know.
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Old 04-13-2022, 05:22 PM   #5
c2itcliff
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If your rig was ordered with the black tank flush system, it will be installed on both tanks. Each tank has separate connection. Check around for another connection. Had same issue until it was pointed out to me at an MOC rally. It was in plain sight but not labeled.
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Old 04-13-2022, 08:20 PM   #6
Drewman
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Quote:
Originally Posted by NOWhineFullTime View Post
2022 3761FL

My 5er has two black tanks, one for the front toilet, and one for the back, with two dump levers. However, I noticed when using the power flush, only one of the tanks fills up.

When having one tank closed, it fills, but nothing comes out of the other one. Did Keystone really only design these campers with only one tank that has the power flush? Am I missing something?

I donít see anything in the owners manual and searched briefly online with nothing. Thanks!
I have a 2021 3761FL & same issue. It appears to be just one tank that gets flushed. Not a good design. Beyond that I hope you’re enjoying your floor plan, I live in mind and have loved it for a year now. It has also been great on the road as I’ve put several thousand miles on it seeing Texas, Louisiana, Mississippi and New Mexico.
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Old 04-15-2022, 10:38 AM   #7
c2itcliff
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Can you post a picture of your wet bay showing all connections?
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Old 04-15-2022, 07:36 PM   #8
Ahdmeyer
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here is a pic of mine 3931fb
i added quick disconnects to each.
Click image for larger version

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