First, make sure you are away from fire or flame. Remove the inside unit from the case. Lift the corner of the felt pad on the bottom of the insert to reveal the packing material in the fuel chamber. Fill slowly to saturate the packing with Zippo lighter fluid. Stop filling when fuel reaches the top of packing. Never overfill. If overfilled the lighter will leak fuel. Avoid getting the lighter fluid on your skin, as it is a skin irritant. If contact with skin does occur, wash the affected area promptly with mild soap and water. If irritation persists or worsens, contact your physician.

Insert the inside unit back into the case, making sure to wipe excess fluid from the lighter and your hands before igniting the lighter. Be sure the fuel can is closed and there is no spilled fuel in the vicinity before igniting. This is a flammable fluid.

If the Zippo lighter is kept in your pocket, Zippo suggests that it be placed bottom down, especially when first re-fueled.