Karen N Granbury , TX January 12, 2015 The upper spray arm in our jennair dishwasher fell off I ordered an upper spray arm. The new one wouldn't attach. I discovered I needed a new top wash spinner nut. I ordered it and it arrived the next day. I was able to put it in and attach the arm in about 2 minutes. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes