Instructions For Hydraulic Storage Bed I Just Bought A Malibu Wakesetter Lsv. Having Trouble Operating The Hydraulic Wedge. Operating Instructions?

I just bought a malibu wakesetter lsv. Having trouble operating the hydraulic wedge. Operating Instructions? - instructions for hydraulic storage bed

No one really knows the exact functioning of the iceberg. Can anyone help to describe the right way to use it?