Purge Air from Fuel Line - General Diesel Engine Help

I was an idiot and ran my backhoe/FEL out of fuel the other day. I believe I now have air in the line preventing the machine from starting.

I've come across a few videos online but I'm still not sure how to purge/bleed the line. Can someone explain how I should or can proceed to get the air out? From my limited understanding I believe I can use vacuum to pull fuel out through the return line. I have available a hand vacuum pump from a brake bleeder kit and also a 7 cfm A/C vacuum pump....

Purge Air from Fuel Line - General Diesel Engine Help

Purge Air from Fuel Line - General Diesel Engine Help