My coach a 1991, had a pump on the curb side that also drains the tank into a garden hose. Also there is an air actuated valve on mine on the curb side that may be operable. It drains out the bottom of the coach, but has the standard sewer connection you access from under the coach.
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Gordon Hummel
1991 41.5' #266
8v92
2009 Pontiac Vibe GT Toad
Fulltime on the road
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