I recently had to change the belt on my sander. I ended up having to cut it off with some sissors :~( Moving right along... To install a new belt here is what I did. Unscrew the adjusting nut on the side of the unit. This should be able to be done by hand. Then push on a new belt just enough to start it and then screw in the adjuster screw all the way tight. The roller should now be straight and not at an angle. Plug the unit in and bump the starter switch slowly until the belt moves over to the disired place. Of course you will want to do this on your shop table or shop with the sander upside down. Good luck. Mike
To change the belt,place the belt sander on a 45 degree angle facing downward on the work bench. Push hard until the front roller locks into position. The belt will now be loose and the roller locked in place. To release the roller you must pry it forward with a screwdriver between the nameplate area and the roller bracket. It will "snap" into place. Run the unit and adjust the belt with the adjuster knob on the side until the belt is in the correct position. Voila!