Alright, I'm really sorry if I'm being annoyingly cautious, but I want to double check everything before I do it. So when I look at what I am pretty sure are the injector lines, I see two rows of nuts, as seen here:

Just to make sure, I am to loosen every nut in each row and then start pumping? Or do I only loosen one row, or a few in both rows?
And to answer your question Daw Two, not to my knowledge, though it is possible my dad did it on his own while I was away.