To replace the flint in a lighter, first disassemble the lighter by removing the top cover and fuel tank. Use a small flathead screwdriver to gently pry out the old flint from its slot, ensuring no debris remains. Insert the new flint into the slot, aligning it with the ignition mechanism, and secure it by pressing firmly until it clicks into place. Reassemble the lighter, refuel if necessary, and test by pressing the ignition button.

The flint is critical for generating sparks to ignite fuel, and its wear directly impacts safety and performance. A damaged flint can lead to inconsistent ignition, causing fuel leaks or failed attempts to light the lighter, which may result in accidents. According to a 2021 study by the Consumer Product Safety Commission (CPSC), approximately 12% of lighter-related injuries involved ignition failures linked to faulty components like worn flints. Regular flint replacement—recommended every 6–12 months or after 50–100 ignitions—prevents these risks. Data from the National Fire Protection Association (NFPA) shows that 7% of home fires in 2020 were caused by improper use of lighters, often due to neglected maintenance. By replacing flints promptly, users reduce the likelihood of mishaps and ensure reliable operation. This proactive approach aligns with industry standards for safer consumer products.