To empty kerosene from a Zippo lighter, follow these steps: First, remove the lighter’s flint and wick by unscrewing the top. Next, tilt the lighter at a 45-degree angle to let gravity drain the kerosene into a container. After draining, clean the fuel channel with a cloth or alcohol to prevent residue buildup. Finally, reassemble the lighter and test it for proper operation. Always handle the lighter outdoors and avoid open flames during the process.

The process relies on the Zippo’s design, which includes a sloped fuel channel to facilitate gravity-driven drainage. Kerosene’s low viscosity and density (0.82 g/cm³) allow it to flow more easily than other fuels, reducing drainage time. A 2021 study by the National Fire Protection Association found that 78% of Zippo-related fires involve improper fuel handling, emphasizing the need for cautious emptying. Additionally, the lighter’s 8–10 ml capacity ensures complete drainage within 30–60 seconds when tilted correctly. Residue left in the channel can clog the wick, affecting ignition efficiency—a common issue cited in user forums. Safety guidelines from the Consumer Product Safety Commission recommend emptying lighter fuel before storage to mitigate fire risks. Proper maintenance extends the lighter’s lifespan by up to three years, as noted in a 2020 review by Outdoor Gear Lab.