Fill it and make the switch is turned off before refilling. Introduce the gas tank into the hole and press to inflate. About 10 seconds, the gas filling can be completed, wait a few minutes, wait for the gas to stabilize, and then it. If there is a hissing sound in the tail after filling the gas, a pen tip to slightly press into the port to eliminate it. Ignition operation 1. Replace the soldering iron tip 2. Push the switch to the ON position and hear a "hissing" sound. 3. Push the electronic switch to . 4. After lighting the fire, burn for 3 minutes. When the fire is extinguished, the soldering iron tip will continue to heat up. 5. Adjust the size 6. The temperature of this product is as high as 1300 degrees (the temperature of the soldering iron is 450 degrees). Please pay attention to safety when using it. Turn off the switch after . 7. When using a gas soldering iron, please pay special attention to wait until the is completely eliminated and the object inside the soldering iron turns red before performing the operation to prolong the life of the soldering iron tip. Colour: as shown Material: ABS Package Contents: 1 set x welding kit Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.