Pat B Mineola , TX August 21, 2022 Appliance: KitchenAid 5-Speed Blender KSB5ER4 Kitchenaid Blender Ksb5er4 / : Our blenders drive coupler shattered and had to be replaced. How to replace Blender Drive Coupler. By replacing the damaged Drive Coupler with a new one. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes