Replace belt

How do I open this unit. I have checked other sites and they say to use a putty knife to open it up. Others say to unscrew the nuts…however I can’t locate any screws.

Hi.

Use the putty knife to open the clips one on each side about 2 inch from the ends. Raise the top, take out 2 screws 5/16" one on each side open towards you and pull off the front panel from the bottom clips.

Simon.