1997 Ford Mustang Owner Guide 1st Printing - Page 192

Preparing to Change the Tire 1. Make sure that your vehicle will not move or roll. If you have an automatic transmission, put the gearshift in P (Park). If you have a manual transmission, put the gearshift in 1 (First). Set the parking brake and block the wheel that is diagonally opposite the tire that you are changing. When one of the back wheels is off the ground, the transmission alone will not prevent the vehicle from moving or slipping off the jack, even if the vehicle is in P (Park) or 1 (First). To prevent the vehicle from moving when you change a tire, be sure the parking brake is set, then block the wheel (both directions) that is diagonally opposite (other side and end of the vehicle) to the tire that is being changed. WARNING If the vehicle slips off the jack, you or someone else could be seriously injured. WARNING To avoid injury, never run the engine with one wheel off the ground, such as when changing a tire. 194