Answer Newmond, You will need to access the back of the timer to remove the knob. On the back of the timer there is a hole with a stem in it. You will need to pull the stem out using a small flat blade screw drive. Once the stem is out pull the knob off and put new knob on. Push stem back in. Read More... Answered by AppliancePartsPros.com | Thursday, June 6, 2013