Shredder ps60c-2

Question

I have a fellows ps60c-2 shredder and after I removed the seven screws I could not get the powerhead apart. I need to know what is holding it together yet. It also is shredding on the left side but not on the right side (Power switch side). I am pulling it apart because somebody has let loose or broke inside and do you know what this possibly could do or have something to do with the shredding.