In other words, if you are just bleeding air out of the lines, do this by bumping the starter (turn key to start for . 10 seconds, then leave in the "on" position) and let the LP run it's cycle for 30ish seconds. I crack (much as I would for brake bleeding - not much) 1, 3, 4, 5, - cycle the pump, and watch for fuel to start gurgling. If you do this several times and no fuel, loosen the nuts about two or three turns, jiggle the fuel line, tighten the nuts until they touch, then back about a 1/4, then cycle the pump again.