If your KitchenAid blender coupler has broken nibs and needs to be replaced, you don’t have to buy a new blender or find a service center or send your blender back to KitchenAid for a repair – you can do it yourself! Follow this video and learn how to remove the old coupler with a mallet and flathead screwdriver. You can find a replacement coupler online for . Note: As stated in the video, the coupler unscrews CLOCKWISE. If you hit it with the screwdriver / mallet combo in a clockwise direction a few times, the coupler will spin faster than the motor shaft and will unscrew.