If you look down from the top of the machine and prise the wheels from the side of the machine. You can see that there are two screws (front and back) holding the case together. They are the same as the screw that can be seen. They have a torx 15 head on them.
You will need a long shank bit, they are available at Bunnings, I used the security bits ($50).
Saved $75 plus parts just to fix the broken power cord.
Michael
March 2006