Gary S Stevens Point , WI December 26, 2017 Appliance: Whirlpool Mixer K5SS Whirlpool Mixer K5ss: After 20 years of use coating was coming off the original beater. How to replace K5ab 5 Quart Kitchenaid Flat Beater. Replaced the beater. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes