Do you have a schematic diagram for the plumbing on a 2021 coachman leprechaun 311fs. There is a valve handle behind and above the rear passenger side tire, what is that for??
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It is the black tank release valve. Keep it closed while traveling it keeps the weight of the stinky stuff out of the cross pipe so it does break I guess. On the drivers side there is 3 valves one in front is for the washer dryer combo. One on top is black tank the last one is Grey.
Basic rule on the black tank is keep it closed until it is time to dump. Leaving it open will lead to the "brown pyramid of doom".
Ken
__________________ Amateur Radio Operator (KE5DFR)|No Longer Full-Time! - 2023 Cougar 22MLS toted by 2022 F150, 3.5L EcoBoost Tow Max FX4 Lariat Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
fyi, washer drains directly out, not to the gray tank. Id recommend running a load and watching it carefully at the beginning. My inline anti siphon was twisted up by installer, water quickly came out on the floor until i fixed it .
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