I watched a YouTube video and having extensive maintenance experience changing the timer and know was relatively easy. My dryer matched the video exactly. Beginning to end probably 30 minutes. The hardest part is always pulling out the dryer far enough to get to the back. Remember to unplug the dryer. Also, having a T10 wrench isn't likely for most people. I had one and it is necessary to get out one tiny screw hold the timer in place.