Gas grills typically use either natural or liquid propane (LP) gas for fuel. Both grill types connect to the gas supply with a flexible hose terminating on each end with rotating brass connectors. Grills that use LP tanks are also equipped with a regulator to control the pressure of the gas to the grill burners. If you need to remove one of these grills, follow a few basic safety procedures and recruit a friend to help carry the bulky appliance. LP gas grills are typically equipped with two wheels on an axle at one end, for easier relocation.
Turn the shutoff valve clockwise on the gas line for a natural gas grill, or on top of the tank for an LP gas grill, to stop the flow of fuel to the appliance.
Spray a brief burst of lubricant on the connector at the end of the grill's fuel line where it attaches to either the natural gas pipe or the LP tank. Let the lubricant work into the connector for 10 minutes.
Turn the fuel-line connector counterclockwise with pliers while wearing work gloves to protect your hands from the metal edges. Pull the fuel line off the nozzle of the LP tank or the natural gas line.
Disconnect the fuel line from the nozzle on the back of the old grill if the part is still in good shape — no nicks in the line or other signs of wear — and you want to use it with a new grill. If you are switching from LP to natural gas with a new grill, the old fuel line will not work and should be replaced.
Pull the grill away from the wall and lift with the help of a friend. LP gas grills with wheels on one end can be lifted on the opposite end at an angle and rolled away.