Bleed Fuel System at Injection Pump

What happens here

After replacing the fuel, the creator prepares to bleed the fuel system. He identifies a bleed screw located on the side of the injection pump. He loosens this screw and then turns the engine over using the ignition until a steady stream of fuel (without air bubbles) emerges. He then tightens the bleed screw. He repeats this process for other bleed points or injectors, ensuring all air is purged from the fuel lines leading to and within the injection pump. He then tightens all lines connected to the pump.

Goal: Remove all air from the fuel lines and injection pump.