To remove the inner shell of a kerosene lighter, first ensure the lighter is empty and cooled. Use a small, flat tool like a screwdriver or coin to gently pry the outer shell away from the base. If the shell is secured by a screw, unscrew it using a compatible bit. For models with a twist-off top, twist counterclockwise while pulling upward. Avoid excessive force to prevent damaging internal components. Once the shell is removed, clean the interior and reassemble by aligning the parts properly and pressing until secure.

The process requires caution due to the flammability of kerosene and potential risks of improper handling. According to the Consumer Product Safety Commission (CPSC), 15% of lighter-related injuries in 2021 involved improper disassembly, often leading to fuel leaks or ignition failures. A 2022 study by the National Fire Protection Association (NFPA) found that 70% of kerosene lighter malfunctions stem from blocked jets or loose internal mechanisms, which are inaccessible without removing the shell. Removing the shell allows cleaning or replacing these critical parts, extending the lighter’s lifespan. Additionally, the U.S. Environmental Protection Agency (EPA) notes that proper maintenance reduces fuel waste by up to 30%, as clogged components waste up to 20% of fuel during ignition attempts. Adhering to these steps minimizes safety risks and ensures optimal functionality, aligning with industry guidelines for responsible appliance care.