Clean and Reinstall Fuel Shut-off Valve

What happens here

Using an adjustable wrench, the creator completely removes the fuel shut-off valve from the bottom of the fuel tank. He reveals that the valve is entirely blocked by a thick, gooey substance resembling algae or rust. He uses a pick tool to meticulously clean out all the debris from the valve, then blows through it to ensure unobstructed flow. He also shows the internal plunger of the valve, which also needs to be cleaned. After thorough cleaning, he reinstalls the now-clear shut-off valve.

Goal: Restore full functionality to the fuel shut-off valve.