shadows4 wrote:
Well I will probably get flamed for this, oh well. I open the black tank valve and drain the tank. I then close and turn on the flusher. I let it fill the tank until I can't hear the water spray in the tank any more. This usually takes about 5-6 minutes. I will then open the valve again and watch till the tank runs clear. Then shut the valve and let the sprayer run for a minute. Turn off sprayer and it is good to go. Flame away!
I do the same thing but I even let it run longer. Those rotating head style flushers don't push much water at all. I'm guessing I could probably go 20 minutes without overflowing, I'd be willing to try it on someone else's rig as a test, just email me.
Ron W.