By {HEAD ~ an adjustment} of {TAIL ~ the presetting device}, the press elements are brought into a position with a reference degree of pressing 
of
By { HEAD ~ an adjustment } of { TAIL ~ the presetting device } , the press elements are brought into a position with a reference degree of pressing
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH