Used the video online and had some trouble getting the disc off. r. Used the flat screwdriver and hammer as in video and after about 5-6 minute, pried it off. Easiest part was putting on the new coupler. I ordered part from you on Friday and received it the next day, couldn't believe it! Works like new again and the first project was grinding horseradish root for the Kielbosi sausage for Easter. Cheap fix for a great appliance. Thank you, Millie Yasenchak, Pottsville, PA