Marie O Erie , PA October 01, 2022 Appliance: KitchenAid 5-Speed Blender KSB5MC4 Kitchenaid Blender Ksb5mc4 / : The part was so old that it was pliable & sticky. How to replace Blender Drive Coupler. Ordered the new part, took off the old one easily after watching the video, & installed the new part. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes