Before inflating, use a small tool to support the inflating core, completely put the residual gas inside, so that the pressure in the lighter can be eliminated; The gas tank outlet vertical downward pressure, pressure 5 seconds each time, two or three times. Please wait for about 5 minutes after charging. If there is still no fire after 5 minutes, please adjust the regulating valve to a larger size (see + - symbol). When refueling, there must be no sparks or kindling around, to ensure safety. Do not smoke while filling gas; Qualified butane gas should be used, inferior gas may damage the lighter or reduce the service life;.syi