During the decade that I've owned my 77 coach with the combined tank that Forest mentioned I have never flushed and only once had a problem. The problem occurred when the outlet valve seeped liquid but not the solids and coach sat for a long time and I ended up with the outlet jammed with solids. Solution: think Robin Williams in the move "RV". I replaced the dump valve and never had another problem.
__________________
Jon and Alie Kabbe
Started with 77 Coach
Now have 39' 93 coach
2007 civic toad
|