Clean the ends of the pool hoses. This is especially important if you're using the screw-on type of hose. Dirt in the grooves will encourage water leakage.
Attach a hose from the pool filter out spout to the pool inlet. If you're using the screw-on type of hose, apply two layers Teflon tape around the male end of the hose before tightening. If you're using the push-on-and-clamp type of hose, dip the end of the hose in hot water for a few seconds. The hot water makes the plastic pliable and easier to push onto the inlet and outlet. Once the hose is on the inlet/outlet, slide the clamp into place and tighten it with a screwdriver to securely hold the hose in place.
Connect another hose from the pool skimmer to the pump inlet. The inlet is located right in front of the pump basket. If your pool also has a main drain, you need an adapter that will connect both the skimmer and the main drain to the pool pump inlet. Adapters are available at most pool supply stores.
Check the pump basket to make sure that water is in the basket area. If there is no water in the basket area, loosen the pump basket lid until water flows into the area. Once it is full, close the lid.
Open the air valve before plugging in the pool pump. The air valve allows the air that is trapped inside the filter to escape. It must be open before turning on the pool filter.
Plug in the pump and turn on the filter. The minute you see water spray from the air valve, close the valve.