Mary G Houston , TX March 15, 2014 Appliance: KitchenAid 5-Speed Blender KSB5WW4 Kitchenaid Blender Ksb5ww4: The coupler on my Kitchenaid blender failed/disintegrated. How to replace Blender Drive Coupler. I watched the YouTube video for repair/replacement of the coupler. I ordered the part which arrived very quickly. I re-watched the video and was successful in removing the damaged part and installing the new coupler. It was so easy to do! I an now proceed with my daily life in using my blender. Thank YOU!!!! 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes