Elias D Santa Clarita , CA February 27, 2015 Appliance: Maytag Gas Dryer MDG6400AWW Maytag Dryer Mdg6400aww: Timer was broken cycle would not end and the dryer would run for hours for nothing wasting $. How to replace Timer. Replaced the timer 5 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes