FORD 2001 F-550 v.2 - Manual (Page 99)

Failure to follow these instructions will affect the performance of
the safety belts and increase the risk of personal injury.
Safety belt pretensioner
Your vehicle may be equipped with safety belt pretensioners at the driver
and front outboard passenger seating positions.
The Seat Integrated Restraints (SIR) seat is equipped with a buckle
pretensioner. Do NOT place objects between the seats, this could
interfere with the functioning of the pretensioner. For the SuperCab and
CrewCab base bench seats and all Regular Cab seating positions, the
seatbelts are equipped with a retractor pretensioner.
The safety belt pretensioners are designed to activate only during certain
frontal or near-frontal collisions with sufficient longitudinal deceleration.
A safety belt pretensioner is a device which tightens the webbing of the
lap and shoulder belts in such a way that they fit more snugly against
the body.
The driver and front outboard passenger safety belt system (including
retractors, buckles and height adjusters) must be replaced if the vehicle
is involved in a collision that results in the activation of the safety belt
pretensioners. Refer to the Safety belt maintenance section in this
chapter.
Failure to replace the safety belt assembly under the above
conditions could result in severe personal injuries in the event of
a collision.
Front safety belt height adjustment
If your vehicle has seat integrated restraints you will not have safety belt
height adjustments.
Your vehicle may have safety belt height adjustments for the driver and
front passenger. Adjust the height of the shoulder belt so the belt rests
across the middle of your shoulder.
Seating and safety restraints
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