Hi Gman

I am not that young, and yet I cannot tell you anything specific about this machine, and doubt if others who reply on this Forum can also.

I can give you some general directions and things to look for. Look at the back of the machine and see if the top is hinged. If it is, you might be able to flip it up by releasing clips that hold it to the front by inserting a screw driver or putty knife in the gap between the front and the top, near the edges. If the top flips up, you can then take off the front and replace the belt.

If the top does not come up from clips, look to see if the front unscrews or comes off in some way.

Good luck, sorry we could not be of more help (how old is this machine anyway?)