That is, by removing or loosening the screws or {HEAD ~ pins} 35 on {TAIL ~ either or both} of the leaves of the hinges, the skid plate is loosened sufficiently so that it may be pivoted into a better ground engaging position 
on
That is , by removing or loosening the screws or { HEAD ~ pins } 35 on { TAIL ~ either or both } of the leaves of the hinges , the skid plate is loosened sufficiently so that it may be pivoted into a better ground engaging position
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH