I used the owners manual provided on PDF. It was simple to replace per the manual and took approx. 1/2 hour. The main thing was being careful with the inside cap hiding the bottom screw for the handle. It is plastic so you have to be careful when you are trying to pop it out from the clips hidden by the cap. The other thing was I had to order a radiation tester from Amazon for 22.00. The comments listed by buyers indicated that most microwaves leak more than the recommended .5 on the meter, this was even happening on new microwaves. I would recommend you just keep 5 to 6 ft from the door when operational.