1998 Buick Century Owner's Manual - Page 250

Removing the Flat Tire and Installing the Spare Tire A CAUTION: Getting undera vehicle when it is jacked up is dangerous. If the vehicle slipsoff the jack,you or could be badly injured killed. Never getunder a vehicle when it is supported only by a jack. 7 CAUTION: I A Raising yourvehicle with the jack improperly positioned can damage the vehicle and even make the vehicle fall. To help avoid personal injury and vehicle damage, be sure to fit the jack lift head into the proper location before raising the vehicle. 1. Using the wheel wrench, loosen all the wheel nuts. Don't remove them yet. 2. Turn the jack handle to the right to raise the jack lift head a few inches. 5-30