Keystone Fuzion 371 Blackwater valve ?
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.