Steve W Omaha , NE April 30, 2018 Appliance: KitchenAid 5-Speed Blender KSB5MC4 Kitchenaid Blender Ksb5mc4: Drive coupler was shredded. How to replace Blender Drive Coupler. I watched the short video on how to repair and it all went perfectly. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes