A fuel cut-off switch designed for a Boeing aircraft.

Printing and Assembly Instructions:

Print the model in its current orientation. Use support on “base” and “knob_2”

A spring should be placed at the center of the lever. Use filament to secure the spring in position using the holes on the side of “lever” and “knob_1” part.

The "Knob_2" part can be glued on after the spring has been installed.