Robert L Santa Cruz , CA March 01, 2022 Appliance: KitchenAid Solid State Mixer KM25G0XWH4 Kitchenaid Mixer Km25g0xwh4: Kitchenaid mixer paddle was not mixing. How to replace Worm Gear And Bracket Assembly. Replaced worm gear and bracket assembly. Mixer working nicely now. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes