Buick 1998 Century Owner's Manual page 57

9. On
both sides
of
the harness, pull up on the lap part a
little to be sure it's locked.
If the harness isn't locked, or if it becomes too tight,
unfasten the harness clip. Then unlatch the harness
by pushing the button on the buckle, and let both
sides of the harness go all the way back so they will
move freely again. Then, repeat Steps 4 through 8.
If the harness still doesn't lock, don't use the child
restraint. See your dealer to have the built-in child
restraint serviced.
10. Adjust the position of the harness on
the child's
shoulders by moving the clip up or down along the
harness. On each side of the harness, the shoulder
part should be centered on the child's shoulder. The
harness should be away from the child's face and
neck, but not falling off the child's shoulders.
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