Elizabeth O Savannah , GA October 16, 2014 Appliance: KitchenAid 5-Speed Blender KSB5OB4 Kitchenaid Blender Ksb5ob4: The coupler on my kitchen aid blender wore out. How to replace Blender Drive Coupler. I followed the instructions provided on AppliancePartsPros.com for this particular problem. I was so thankful that I did a Google search and found the part only cost me $4.95. I thought I was going to have to pitch my blender and fork out money for a new one :( . Luckily I was able to fix it myself (no man needed ;) . Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes