Carol K Brookfield , IL September 09, 2014 Appliance: Model WHIRLPOOL MDG7400AWW Timer knob Watched the YouTube video and fixed it myself. Who says women cannot be just as handy as men! It couldn't have been any easier! This site has to be the best out there. Saved me alot in hiring someone else to do the repair! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes