Bob: Thank you for contacting Porch. There should be a gas shutoff valve behind the range you can turn off. Then turn on and light a burner to bleed off the gas and the burner should go out. You may then disconnect the gas connector at any point on the range side of the gas shutoff. Once the floor is done reinstall the gas connector and turn on the gas. Check for gas leaks at the point you disconnected it with soapy water for any leaks (bubble indicate leak) and push the range back in. Then light the burners, note it will take a few tries to ignite to bleed out the air. Note if the range has an older brass style connector you might consider replacing it. Or you can contact a plumber to do this for you. You can locate one here: https://pro.porch.com/near-me/plumbers