It's been awhile since i did it. There is a slot cut in the auger tube under the the bearing flange on the left side to rotate the auger out though that. I think you just loosen the right bearing flange and turn auger till u can access it through the return hole over the cylinder. Like I said been 5 or more years since I changed one. I don't think you have to take the sprocket off either just the chain.