Michael S Ridgecrest , CA April 13, 2021 The little engagement pegs on the back of the control knob were broken off thus causing the knob to fail to engage with the timer shaft The knob comes with the clip already installed. You merely position the knob on the timer shaft and press it on. The outstanding part of this affair was how fast the part arrived! Kudos to Appliance Parts PROS! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes