The circuit requires reduction of the engine speed to a speed below the lower response speed in {HEAD ~ order} to restore {TAIL ~ the response speed} of the speed responsive control to the predetermined speed 
to restore
The circuit requires reduction of the engine speed to a speed below the lower response speed in { HEAD ~ order } to restore { TAIL ~ the response speed } of the speed responsive control to the predetermined speed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH