Quote:
Originally Posted by Mr.Goodbar
Brother in law told me the same thing. You can hookup the all the hoses, but don’t dump the black tank until it’s 2/3 full. That way you always know there’s sufficient quantity to drain properly. Took his advice and I’ve never had any problems.
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In addition, dump the black tank first. If you have the black tank flush system then close the valve and partially fill/flush the blank tank a few times. Next, empty the gray water tank after the black water tank in order to rinse any residual black waste that might remain in the drain hose. Lastly and not least, Make sure you’ve closed both of the valves before removing the drain hose.