If you press your self test switch until the number 4 appears in the coin played window .. there will be 2 sets of numbers on the left side. Post those numbers since they can be looked up to tell you the payback percentage. Close the door and you machine will reset and be ready to play again.

Self test switch is the size of a pencil lead. It can be located to the left of the power switch or on the backside of the power switch box for machines made after 93.