Can't find black and grey tanks.

Michelle.S wrote:
Is it possible the unit was setup on a seasonal site and the previous owner was plumbed directly and removed the holding tanks??

+1

Might not have ever had any.

Get underneath and find the tanks, if they are there. You will likely need to pull down whatever cover they used under the frame. But you'll want to do that anyway for inspection and as you work on the trailer. Waste tanks, if there are any, will almost certainly be under the floor and between the frame rails. Keep in mind that a fresh water tank could be under there, but also is often inside the trailer, under a bed, or a dinette seat, or other cabinet.

Is it possible the unit was setup on a seasonal site and the previous owner was plumbed directly and removed the holding tanks??

Working on something you know little about (where are waste tanks?) can get expensive.

To drain the black and gray tanks look for a 3" black pipe with 2 t-handle valves. You may have two lines. I do. You also need to find the FW tank drain. It will be a 1/2" line with a valve on the end. You also need to find 2 low point drains. One for hot and one for cold. They will have valves or caps on the ends.

You tube is your friend. You don't need a manual. They are generac anyway. All RV are basically the same.

Who did you buy it from? Can they not tell you?

Consider fresh water piping, the fresh water tank and and water heater.

I would think the handles are near the outlet. It's possible they fell off or were removed. Look for small holes near where the outlet is. You may have to get one of these. They screw back into the slide valve: click here.