Jason M Monticello , GA September 20, 2019 The planetary on my Kitchenaid mixer fell off The planetary on my Kitchenaid fell OFF, leaving the main shaft still attached. I checked YouTube and found a video from AppliancePartsPros.com showing how easy it was to replace. While watching the video, I also learned about the transmission housing upgrade. My old one was plastic, while the upgrade is aluminum, so I went ahead and ordered it also. All total, I have maybe an hour and a half of time in the repair and almost $100 in parts. Considering I paid almost $500 for a new mixer almost 10 years ago, this was an easy, and inexpensive fix. 2 screwdrivers, and snap ring pliers were all I needed. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours