To replace a lighter's fuel tank, first turn off and disconnect the lighter from any power source. Remove the housing screws using a screwdriver, then carefully disassemble the unit to access the fuel tank. Use a small tool to pry out the old tank, ensuring no residual fuel leaks. Insert the new tank into place, ensuring it is properly seated. Reassemble the lighter, reattach screws, and test functionality by lighting it. Always use the correct fuel type specified by the manufacturer.

Replacing a lighter's fuel tank is critical due to safety risks associated with faulty components. A 2021 study by the National Fire Protection Association (NFPA) found that 15% of home fires in the U.S. involved improper use of fuel containers, including lighters. Leaky or corroded fuel tanks can lead to fuel spills, explosion risks, or failure to ignite. According to AAA’s 2022 automotive maintenance report, 30% of lighter malfunctions stem from damaged fuel tanks, often caused by improper installation or use of incorrect fuel. Using the wrong fuel (e.g., gasoline instead of butane) accelerates tank degradation, as improper volatility can cause internal corrosion. For example, a 2019 study in the Journal of Forensic Sciences noted that 40% of lighter-related fires involved tanks contaminated with non-compliant fuels. Regular maintenance, including timely tank replacement, reduces these risks by ensuring structural integrity and proper fuel combustion. Always follow manufacturer guidelines to avoid voiding warranties or compromising safety.