Mechanical sensor broken. Works only in rev...

Hi,
Hoping someone can help me with this. My Techko S105PZ shredder jammed yesterday and while removing the printer, the mechanical sensor broke. I am assuming that the black plastic part at the center of the shredder is the mechanical sensor. Now the shredder only works in reverse mode. Is there any way to bypass the sensor and get the motor to turn on when power is applied. This way I would still be able to use the shredder.

I took the screws off to take out the top cap of this shredder. But it appears as if there is something under the on/off switch that is hold the cap from coming off.. I didnt try to use too much force lest I break something. Anyone ?