Buick 1994 Century Owner's Manual page 202

I
NOTICE:
Raising your vehicle with the jack improperly
positioned will damage the vehicle or may
allow
the vehicle to fall off the jack. Be sure to fit the
jack lift head into the proper location before
raising your vehicle.
Raise the vehicle by rotating the wheel wrench
clockwise.
Raise the vehicle far enough off the ground so there is
enough room for the spare tire to fit.
Remove all the wheel nuts and take off the flat tire.
Remove any rust or dirt from the wheel bolts, mounting
surfaces or spare wheel.
200