The system 15, where the engine is automatically started without {HEAD ~ an operator request} to start {TAIL ~ the engine} 
The system 15 , where the engine is automatically started without { HEAD ~ an operator request } to start { TAIL ~ the engine }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL