As explained below, {HEAD ~ such an arrangement} facilitates performing {TAIL ~ alignment} and height setting operations at widely spaced blade height positions to increase the accuracy of those procedures 
facilitates performing
As explained below , { HEAD ~ such an arrangement } facilitates performing { TAIL ~ alignment } and height setting operations at widely spaced blade height positions to increase the accuracy of those procedures
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH