Warren L Woodstock , GA February 01, 2015 Drive coupler on kitchenaid blender had disintegrated Purchased replacement coupler and installed per instructions in on-line video linked to part information. Took only a couple of minutes to find tools (hammer and screwdriver) and give it a little tap to loosen the threaded piece. It is a left hand (reverse from normal) thread so you have to tap it like you are normally tightening other nuts. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes