Controller 62 may also turn off {HEAD ~ fuel flow} through {TAIL ~ fuel lines} 40 and deactivate pre heater 34  
through
Controller 62 may also turn off { HEAD ~ fuel flow } through { TAIL ~ fuel lines } 40 and deactivate pre heater 34
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH