I want to change the back roller of my Ryobi Belt Sander Model EBS 810. Please can you let me know how to do this. Thanks

SOURCE: changing belt on vacuum cleaner

If you can't see the motor shaft then you will have to take the top cover off. Some have a couple of scres to remove from the bottom. Then is a slot on each side, from the bottom put a flat blade screwdrive in the slot and push out and up to release the locking tabs. The knob may pop off so watch for that coming off. Put the belt on the brush roll, then feed the belt up thru the opening and stretch it to go over the motor shaft. Put back together.

SOURCE: Sanding Belt Slips Badly

Check and see if the pulleys on the sander are not glazed this somtimes will cause the belt to slip. Give them a good cleaning. If this does not help there is a good chance the spring on the belt tensioner is weak and need changed.

Hop this helps

SOURCE: looking for a manuel for a makita belt sander model #9401

There is a black metal ******** one side that is actually a lever and with the tip of a screw driver or the like, pops out and releases the front roller.

SOURCE: Black & Decker 3X21

I have one of those and I just smack the front roller ahead with a brass or plastic hammer. I hit the movable bracket that the roller is attached to. It takes a pretty stout whack to do it though. hope this helps you

Testimonial: "Thanks for the help, I wasn't sure if there was some magic button I was missing. Tks, jw "

SOURCE: broken drive belt on belt sander

My answer comes almost a year after the original question, but I'll post it anyway for those who end up here after a search.
Black & Decker no longer supplies drive belts for the BR400 sander, but you can get a replacement elsewhere if you know what to ask for.
The belt is a synchronous, single-sided "XL" series belt, and mine had 120XL031 printed on it. The belt width is 0.31in or 5/16in or 7.9mm. Its pitch (distance from tooth to tooth) is 0.20in or 1/5in or 5mm. Its total height is 0.09in, and tooth height is 0.045in. It has 60 teeth, making the total length 12in.
I found a replacement at sdp-si.com, part number A 6R 3-060031.
Look here for timing belts (inch), then narrow the search for single-sided, .200 (XL) pitch, 60 grooves, 5/16 width.