Polar 115 - what are these for?

Hello Everybody

I have been working with a Polar 115 recently but I not sure about the parts resalted in the picture.
I will appreciate if anybody could tell what are they ? and what are they for?
and why the part number two are conected to the hydraulic oil tank?

 

Hi Andres:
That part #1 is Safety bolt, in order to prevent accident to the operator and the machine, in case from any fault in the electronic system for the coming knife is NOT down.
The #2 is connected to the hydraulic main tank in order to get the power for to transmit power to the main gear for the knife is coming down.
The system will be free of Air in the system, otherwise, the paper cutter will be unstable

 

thank you very much for your prompt reply to my question