-loosen and move bolts at bar connector, knife press plate clip block ,keep dismantled parts for reassembl
-pull the old knife bar assembly out, insert a new one
-install knife press plate clip block,regulate their clearances to knife section (normally 0.3-0.7 mm ) and clearance between knife section to knife guard(low side = 50 mm )
-rotate cutter table auger to move knife connector to the max. travel point,tap crop rack on knife bar to adjust tips of knife section in line with tips of knife guard,deviation should be