Ordered part. It arrived a couple weeks later. Unscrewed bottom of microwave (it's over stove top). It was hinged at back (GE Profile Spacemaker). Old motor was attached by two small screws and easy to remove. Installing new one was somewhat problematic until I realized that the two screw holes on each side of the motor (for fastening it to the bottom of the microwave) are not interchangeable. There's a raised "bump on the underside of the microwave that one of the two holes fits into on each side of the motor. This avoids putting pressure on the screws as the turntable rotates. Once I figured that out, it was easy to attach the new motor. Simple instructions would have helped. The motor was exactly like the one that went bad and the replacement works perfectly.