manual fuel management gauges question

[cameron]

I am running the tzt3 12, my fuel tanks don't have sensors in them, or they don't really work so I use manual fuel management. on my controls screen, I run the twin outboards and it has 2 tanks. I have it set to manual fuel management and there are 2 tanks displayed.

I can not figure out how to manually fill one tank without the other, and further more, when I am only on one of the tanks, how do I just use one? I tried the "bring to front" in the edit screen, but that didn't seem to do what I want to accomplish.
Any help would be great.

 

[Johnny Electron]

Without tank sensors the system has no idea what tank fuel is being pulled from. Manual fuel management is a basic calculation of max fuel and the estimated use of fuel based on the flow rate. You might look over the manual fuel management document, if you haven't seen it.

https://www.furunousa.com/-/media/sites ... gement.pdf