Remove the white cap on the threaded opening or “bung” on the top of the tank. Set the cap aside but do not lose it.
Attach one end of a garden hose to the threaded opening and the other to a faucet on the outside of the house.
Turn on the faucet to begin filling the tank with water. Turn off the faucet and remove the hose from the drum.
Insert the hand pump into the threaded opening. Turn the fitting clockwise to secure the hand pump to the tank. Turn the fitting with the adjustable wrench, if necessary.
Connect one end of a garden hose to the pump opening. Connect a sprayer attachment to the other end of the hose.
Crank the handle to begin pumping the water into the hose. Press the handle on the sprayer attachment to spray the water.