Shane G Blackwell , OK May 08, 2018 Timer knob cracked Had to remove screws from back of the unit....unhook timer switch from dryer body remove old timer knob metal jacket. Hook the timer switch back to dryer body and line up notch on new timer knob with and press onto timer with little force. Place back cover back on dryer tighten screws and done. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes