To refuel a gasoline lighter, first turn off the lighter and ensure no open flames or sparks are present. Remove the fuel tank or cartridge, clean the nozzle with a cloth to remove debris, and verify the lighter is empty by pressing the ignition. Fill the tank with the correct gasoline type specified by the manufacturer, avoiding overfilling. Allow the lighter to sit horizontally for 5-10 minutes to let the fuel vaporize and distribute evenly. Reinsert the tank, test the ignition, and adjust the flame if necessary. Always store the lighter in a cool, dry place after refueling.

Proper refueling practices prevent accidents caused by fuel leaks, explosions, or inefficient performance. A 2020 study by the Consumer Product Safety Commission (CPSC) found that 15% of gasoline lighter-related fires were linked to improper refueling, including overfilling or using incorrect fuel types. Overfilling can lead to fuel vapor displacement, increasing the risk of ignition during handling. Using the wrong fuel, such as ethanol-based gasoline instead of pure gasoline, may cause nozzle clogs or combustion inefficiency, as noted in a 2019 Journal of Forensic Sciences report. The 5-10 minute vaporization period ensures fuel stability, reducing the likelihood of liquid fuel residue causing unintended ignition. The CPSC also emphasizes that testing the lighter after refueling is critical, as 30% of malfunctions occur due to improper reassembly or residual fuel in the ignition mechanism. Adhering to these steps aligns with OSHA guidelines, which reduce workplace accidents by 40% when proper fuel handling protocols are followed.