Turn off the gas valve of the gas tank that needs to be replaced first. Turn off the valve in a clockwise upward direction.
two
Turn off the other switch under the valve as well. Only after you turn it off can you remove the joint of the gas tank. Turn it off in a clockwise direction...
three
Take off the gas connector, see that the other end of the connector is connected to the gas stove, there is a rubber ring on this head, be careful not to miss.
four
Then find the newly filled gas bottle, it is very important here to make sure that the gas bottle valve is also closed