Turn off all burners before starting. Make sure that the oven is in the off position as well.
Pull the Frigidaire freestanding range away from the rear wall just enough to access the pressure regulator on the back of the unit. The pressure regulator is on the right-rear of the unit, if you are standing in front of the range.
Find the pressure regulator service switch near the bottom of the unit. The service switch shuts off the gas supply to the pressure regulator. When it is in the service position, the top of the push button switch is almost flush with the body of the pressure regulator.
Push and release the service switch with your finger. The top of the switch will protrude past the body of the pressure regulator. This is the on position.
Slide the freestanding range back against the wall. The rear foot will catch under the anti-tip bracket on the floor.