What is the required force on the handle for 850N?

[Henkkaap]

I just can't figure this out with the stresses and moments. What is the force required on the handle to get the 850N on top?

Link to album: goo.gl/FYpc0k

 

[Mech_Engineer]

Please post the images in this thread to get more (and higher quality) responses.

 

[CWatters]

You will also need some dimensions and angles on the drawings.