Mark H Merced , CA January 02, 2023 Appliance: KitchenAid Stand Mixer KSM50PER0 Kitchenaid Mixer Ksm50per0: Under a load the mixer would stop spinning. How to replace Worm Gear And Bracket Assembly. We replaced some gears in our KitchenAid stand mixer. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes