How do I change this belt?

I need to change a belt on a Kemore Powermate Vac model number 116-2045080. On the housing it reads that I " push in the sides and lift to let interior drop down, remove 2 screws" in another place on each side it says, "put screwdriver on arrow and pry here", but nothing happens. I can't find my manual and it costs an arm and a leg plus time to buy one from Sears. Help!