Customer Questions and Answers for Timer by Whirlpool

Hello George! No special tools are needed to remove/replace the timer WP21001325. Here is the information supplied form the manufacturer: Disconnect the power to the unit. Remove the timer and selector knobs. The timer knob threads onto the timer shaft and is removed by turning it counterclockwise. Remove the selector knobs by pulling straight off. Remove the three screws which secure the rear top edge of the control panel to the end caps and control panel shield. Remove the two screws which secure the bottom front corners of the control panel to the end caps. Lift off the control panel. Remove the screws which secure the control shield to the end caps, and lay the front of the shield on a protective cloth. The control components are now accessible for replacement. The twist-mount switches require no screws to attach them to the control shield. Instead, the tabs formed on the face of the switch are inserted into specially formed cut outs in the control shield. The rear of the switch is then rotated clockwise. This allows a spring tab, located on the switch, to interlock into a mating cut out in the control shield and secures the switch to the shield. Switch removal is accomplished by disengaging the switch locking tab from the control shield cut out and rotating the rear of the switch in a counterclockwise direction. You will install this part in reverse order. I hope this information helps you. Thanks!