Speedeye
Guest
Regarding the bottom sprocket .... On a 7700, there's a slot in the sheet metal on the left side of the machine. You remove the bearing on the right side of the auger, unbolt the bearing holder on the left side of the auger, then "screw" the auger through the slot far enough to get the sprocket off. I've never worked on an 8820, but I would guess that it's the same. You'll want to remove the lower clean grain drive belt to facilitate turning the elevator+auger without turning the entire machine.