The riser grade adjustment 122 has a fore end hopper hinge 140 which is pivotably connected to riser grade adjustment bars which are pivotably connected to sleeve hinges 142 mounted on {HEAD ~ the side wall} of {TAIL ~ the guide sleeve} 116 
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The riser grade adjustment 122 has a fore end hopper hinge 140 which is pivotably connected to riser grade adjustment bars which are pivotably connected to sleeve hinges 142 mounted on { HEAD ~ the side wall } of { TAIL ~ the guide sleeve } 116
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 OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH