[header] How to prepare and install an above ground swimming pool liner [title] Drain all water from pool. [step] You may use a sump pump, your filtration system or siphon hose. [title] Remove all hung ladders from liner area and any other equipment that may obstruct liner area. 
[title] Remove all face plates and gaskets from inside pool area, i.e. [step] Through-the-wall (s), return (s), lights, etc.