Connecting an internal combustion engine to a hydraulic pump is a simple process.
First, you will need to remove the pump body from the engine. This is done by first removing the bolts that hold it in place, then pulling it off of the machine.
Once you have removed the pump body from its housing, you can connect it to your internal combustion engine. The fitting on your engine should match up with the one on your pump body, so if they do not, you will need to buy a fitting adapter kit.