means for controlling {TAIL ~ opening} and closing of {HEAD ~ throttle} means regulating supply of fuel to said reciprocating internal combustion engine 
means for controlling { TAIL ~ opening } and closing of { HEAD ~ throttle } means regulating supply of fuel to said reciprocating internal combustion engine
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH