William M Suffield , CT November 17, 2014 Appliance: KitchenAid 5-Speed Blender KSB5PK4 Kitchenaid Blender Ksb5pk4: Coupler on a blender. How to replace Blender Drive Coupler. I watched the super informative video on how to remove the worn out coupler. I removed it in seconds and replaced the worn part. Their instructional videos on how to replace parts are absolutely the best. They are detailed and save many hours of doing it wrong. I love these guys. This video was not my first and I almost look forward to fixing something else. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes