Albert M Whiting , IN February 03, 2023 Appliance: Whirlpool 4 1/2 Qt. Stand Mixer Classic - Tilt K45SSAC-0 Whirlpool Mixer K45ssac-0: Loss of speed control ran high in all selector positions. How to replace Mixer Foot. Replaced the Speed Control Board. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes