Select a proper nut splitter. This means you will have to pick a nut splitter of a design in addition to a suitable size for the nut.
Twist the screw head of the hydraulic nut splitter in an anti-clockwise direction and push the chisel back to the handle of the hydraulic nut splitter until it is possible to match the nut between the chisel and the anvil. If the screw is rigid to turn you will need to use a correspondingly sized socket or spanner to do this.
Put the framework of the hydraulic nut splitter and line the anvil and chisel up with the nut apartments. Ensure that the chisel is placed at the middle of the apartment of the nut and is square to it.
Turn this screw in a clock wise head Direction pinch the nut between the chisel and the anvil of the nut splitter and to tighten the chisel. Continue turning the screw so that the chisel starts to cut into the nut, as soon as you hear a crack as the nut, but stop divides. You will need to use a socket or spanner on the head of this screw so as to find the torque turning force needed to turn it. You may have to maintain the nut that is hydraulic splitter in place while you tighten the screw. It can be easier to do this with an adjustable spanner.
Twist the screw head of the nut Splitter in an anti-clockwise management until it is free from the nut, and push back the chisel to the handle of the nut splitter.
Repeat on other side
If your nut splitter has one Chisel you might need to repeat steps 2-4 with the cutting Side flat of the nut.