A fairly experienced operator ran my B7001 out of fuel the other day, so I got to watch the process. It was not as easy as I expected.
He did not bother with the fuel pump itself.
Open decompression lever to make cranking easier on the battery.
For each cylinder, loosen off the fuel feed line a bit, crank until all the air is gone and fuel comes out consistently. Watch out, it is under considerable pressure. He didn't take the injectors right out, said it was not necessary.
Close decompression lever, heat glow plugs & start as usual.
Sounds straight forward, but it took a lot of adjusting to get the fuel lines back on properly, and to get the engine running smoothly. It would start, run a but then stall as if it found another air pocket. Then bleed again, etc.