Bought Class C..questions now!

Well,I bought a '97 Coachmen Catalina Sport 240wb....found sooo many problems to fix. Some I can handle,and some I can't. Right now my big question is how do you drain the fresh water tank? I can't find a drain anywhere and just can't imagine having to use the pump each trip to empty it...I am hoping someone here can answer this. This unit has the water tank under the east/west bed in the rear bedroom. It has a split bath. I searched so hard for this and most likely paid a bit much but with our health issues, it was what I needed.I found lots of small stuff to repair,and so far I have handled them..74 yrs.old and still trying...;-)DH has dementia..need I say more...