Tank drain valve Location

[aceofspades]

In my compartment of my 2015 Fuzion 371 toy hauler, there is a pull handle for both the grey and black water tanks. Question, how do I access the actual valves that open and close? My two black tanks empty with the one handle, but the back bathroom (tank 1) will not hold liquid as it seeps out. I have since installed the external twist-on gate valve assembly outside so I do not have clump build up. I see all the videos on how to change these valves, but how do I get to them??
Thank you in advance.

[BFlinn181]

Why wouldn't you let the dealer fix it? It's still under warranty, isn't it? You could follow the pull handle cables to the valves, but access could mean removing other parts or panels to gain access. You could also call the manufacturer and ask about it.

[aceofspades]

Originally Posted by BFlinn181

Why wouldn't you let the dealer fix it? It's still under warranty, isn't it? You could follow the pull handle cables to the valves, but access could mean removing other parts or panels to gain access. You could also call the manufacturer and ask about it.

Thanks for the reply. I will let the dealer fix it; it was more a question of curiosity at this point. I fix airplanes for the Air Force and it's my nature to "learn and know" things. I do not want to tear apart the underfloor following the cable, but I do understand what you are saying. Thanks again!