Now the easy part. Setup your oil catch pan on top of a flat piece of cardboard. Cardboard was invented to catch oil. It works great to catch splashes and it's much nicer to put your knees on compared to concrete. Take the 10mm closed end wrench and remove the oil reservoir plug.
The amount of oil that came out nearly filled this cut up coffee container 2 times. So keep the plug in hand to put back in if you don't have a large enough oil container to catch it in. I used this plastic coffee container to roughly measure how much oil came out. And it pours oil quite nicely into my oil recycling can.