I got an electric log splitter. The instructions are rather vague but say " the bleed screw should be loosened by some rotations until air can go in and out of the oil tank smoothly". For someone with no mechanical background, how much is "some rotations". Seems a bit vague. Will I be able to hear the air flowing? I'm confused on how many turns to open the screw and don't want to ruin my new toy. It's a BILT HARD TL-LS65 if that matters.