Thread: Grey water backs up, won't drain till black drain open
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Old 11-18-2018, 04:10 PM   #17
DebNJim B
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Location: Northville, NY
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Quote:
Originally Posted by ohiocamp View Post
Rich,

I have a 2018 3721FL and they had are two rear tank valves mislabeled. The black tank valve went to grey tank and grey valve went to black tank.
We had to switch tank labels.


ohiocamp

2018 3731FL
We had the same problem with ours. I just relabeled the handles.
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2017 Lariat F-350 FX4, CC, SB, 6.7 PSD 4WD
2018 MONTY 3731FL, at our private winter site in GA
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