Bernie B Copperas Cove , TX January 09, 2015 Appliance: KitchenAid Mixer KSM5 Kitchenaid Mixer Ksm5: My kitchenaid mixer wouldn't spin. How to replace Worm Gear And Bracket Assembly. I used one of the many youtube instructions to fix it. Easy 45 minute fix. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes