2011 Forest River 283TS sewer drains

[pkick]

Fellow RVers,

Just purchased a 2011 Forest River 283TS. Unable to determine which drain handle is for Black and Grey water. Both are black naturally, though the left handle (closest to the cab) is larger than the other
one. No labels either.

Thoughts?

Respectfully,

Paul

[pkick]

Clear tube? I'll take the grey water any day! 🙂
Much thanks for the swift replies. Great crowd here.
Beer is on me.

[Old-Biscuit]

Pick up a clear adapter...use it between drain line and sewer hose.

Then you can visually see which is which when draining tanks and when flushing black tank when it is rinsed

I use a 45*........90* and straight are available

[pkick]

Thank you sir

[Mich_F]

The larger one should be for your black tank.

[ronfisherman]

Larger is Black. Smaller is Gray.