Gerda W Wilmette , IL July 31, 2015 Appliance: Model K3B5WH3 ON THE BOTTOM OF THE BLENDER Broken coupler I did exactly what the instruction showed me and got it done. very easy to do. thank for your fast delivery. I am very happy to have my blender working again. Gerda Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes