Checking For Properly Fastened Chest Clip And Safety Belts - Ford 1996 Explorer Manual

If the child is sleeping or tries to get out of the child seat,
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pull shoulder belts fully out to put the retractor into the lock
mode. At this time, the shoulder belts are in an automatic
lock mode. Allow belts to tighten snugly against the child's
shoulders. The belt will automatically lock and cannot be
pulled out. Refer to Figure 13.
Figure 13: Checking for properly fastened chest clip and safety belts
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