When {HEAD ~ the rear lever handle} is rotated in the downward position, the rotational moment is translated through {TAIL ~ the lever pivot rod} causing the upward pivot action of the lever cam end  
When { HEAD ~ the rear lever handle } is rotated in the downward position , the rotational moment is translated through { TAIL ~ the lever pivot rod } causing the upward pivot action of the lever cam end
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH