Ergo Fix 77200 Manuel D'instructions page 25

Before operating the log splitter, the bleed screw (11) should be loosened by
some rotations until air can go in and out og the oil tank smoothly. Air flow
thru the bleed screw hole should be detectable while the log splitter is under
operations.
Before moving the log splitter, make sure the bleed screw is tightened to
avoid oil leaking from this point.
Failed to loosen the bleed screw will keep the sealed air in the
hydraulic system being compressed after being decompressed.
Such continuous air compression and decompression will blow
out the seals of the hydraulic system and cause permanent
damage to the log splitter..
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