Zineb B Stone Ridge , VA May 15, 2017 Appliance: KitchenAid 5 Quart Artisan Tilt Head Stand Mixer KSM150PSER0 Kitchenaid Mixer Ksm150pser0: 5 qt stand mixer stop working one gear had to be changed. How to replace Motor Housing Seal. Watch a you tube, follow the steps and have the correct tools as shown in the video.The part number for the broken gear was found in the "Repair Part List - 8212010" document Do-It-Yourself Rating: Repair Time Estimate: 2+ hours