When I did mine, I had someone help me and push the pedal real slow while I had the screw open. I would close it of course when he was just about at the end of the stroke. When I was done I had to pump a bit if it sat over night but it worked itself out over a couple of days. Also I've heard of people using an old style oil can, the type with the thumb pump, and using that to push the oil up from the bottom. Just my experience.