There are some phillips head screws that have to be removed.... the bottom plate doesn't come off... you have to flip the vacuum over so the "top" is facing "up" and the motor hood lifts off.... lift from the back (where the switch and handle release pedal are, but do it on both sides) and kind of pivot the hood up toward the front of the cleaner... then you can access the belt. I can't remember where the screws are, I haven't touched one since I was a kid, but lots of newer Eurekas are like that.... I thought there were some screws on the back side of the cleaner hood facing the top, but I don't remember for sure. Good luck.