George W North Billerica , MA November 10, 2015 Appliance: KitchenAid Portables - Stand Mixer KSM90 Kitchenaid Mixer Ksm90: No low speed. How to replace Stand Mixer Speed Control Plate. Replaced parts as ordered.Had to adjust speed control board which took a little fooling around with it as I had not adjusted one before but understood the theory of what needed to be done .I have one happy customer now (Wife) Thank you for fast service and good product. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes