Ford 1996 Contour Manual page 17

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If you need to lengthen the belt, unfasten it and tip the belt
tongue at a right angle to the belt. Pull the belt tongue over
your lap until it reaches the buckle.
If you need to shorten the belt, pull on the loose end of the
webbing until the belt fits snugly.
To unfasten the belt, push the release button on the end of the
buckle. This allows the tongue to unlatch from the buckle.
Unfastening the lap belt in center rear seating position
Safety Belt Extension Assembly
For some people, the safety belt may be too short even when it
is fully extended. You can add about eight inches (20 cm) to the
belt length with a safety belt extension assembly (part number
611C22). Safety belt extensions are available at no cost from
your dealer.
Use only extensions manufactured by the same supplier as the
safety belt. Manufacturer identification is located at the end of
the webbing on the label. Also, use the safety belt extension
only if the safety belt is too short for you when fully extended.
Do not use extension to change the fit of the shoulder belt
across the torso.
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