Here’s a step-by-step guide to safely removing and replacing the propane gas cylinder on your propane gas grill:
Make sure your propane grill is turned off.
Find your propane cylinder; it may be behind a door (depending on your grill model).
There are two basic parts of your grill that you will need to be concerned with: the propane cylinder’s tank valve and the pressure regulator from the barbecue (see illustration).
Before you disconnect the pressure regulator, close the tank valve (turn it all the way to the right, or clockwise).
Once the valve is shut, twist off the threaded pressure regulator.
Remove the tank (on some propane grills, the tank is attached to the barbecue by a restraining bolt or screw; simply loosen this to remove the tank).
When transporting your tank to and from the refill or exchange center, place it upright on the floor of your vehicle, not in the trunk, and take it directly to the location. Do not leave the tank unaccompanied in the vehicle, especially in the summer.
Reverse the process to reconnect your propane tank, making sure the tank valve is closed when reconnecting the pressure regulator. Replacement propane cylinders often come with a plastic safety cap over the tank valve assembly – simply remove this.