Generator had a few codes in history. Main code being low fuel pressure. Natural gas regulator atmospheric vent was completely clogged. I removed the brass vent and cleaned debris and bb out of vent path. Once vent was cleared I inspected fuel pressure, 14” static, 12” running. Gas work is not correct per Generac installation guidelines. See attached pictures. Could not perform a test transfer due to site being critical infrastructure. Generator seems to be starting and running as it should. To guarantee no further issues gas work should be redone to Generac’s guidelines.