Step1:The flame height adjuster on the bottom of the lighter should be set to minimum by turning CLOCKWISE with a small screw driver.
Some lighters come with a metal chip to turn the adjusting screw.
Some lighters have an adjusting wheel that requires no screwdriver.
Step 2: Bleed your lighter
As the butane in your lighter is depleted from everyday use, the fuel tank fills with air. The air that is left at the end of an exhausted fuel tank will prevent more fuel from entering the lighter when you try to refill it. Releasing the air empties out the tank completely and makes room for a fresh, full injection of butane.
Push the refilling valve with a screwdriver to let out the air inside until no hissing sound is heard. Hold the lighter away from your face.
Step 3: Insert the Butane
Hold your lighter upside down. Turn the can of butane upside down as you prepare to refill the lighter.It will avoid injecting air into the lighter.
Shake the refill can to check if it contains gas. Push the nozzle into the valve for about 5 or 10 seconds while the lighter fills. The lighter will get cold as a result. If your lighter has a fuel window, you can visually monitor how much butane makes it into the tank.
Plus:Do not refill your lighter immediately after using it. You should allow enough time for the lighter to cool off. It ensures the butane enters the tank as quickly and thoroughly as possible.