{TAIL ~ A cam plate} is disposed in {HEAD ~ the engine housing} and supported for rotation about the longitudinal axis 
{ TAIL ~ A cam plate } is disposed in { HEAD ~ the engine housing } and supported for rotation about the longitudinal axis
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH