Refueling with NO AC or DC power source available

Question 1

Explain?

Answer 1

Tanks refueling valves each have a red override button that must be pressed and held while fuel is being pumped into the tank.Releasing the override button allows the spring in the valve to close the valve.

Question 2

`Caution when doing this proc?

Answer 2

Overfill tank, no automatic fuel shutoff during manual operation.