Mazda 2006 B-Series Owner's Manual page 71

Front safety belt height adjustment
Your vehicle has 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.
• Regular Cab and four–door Cab
Plus 4
• two–door Cab Plus
To lower the shoulder belt height, push the button and slide the height
adjuster down. To raise the height of the shoulder belt, slide the height
adjuster up. Pull down on the height adjuster to make sure it is locked in
place.
WARNING: Position the safety belt height adjusters so that the
belt rests across the middle of your shoulder. Failure to adjust
the safety belt properly could reduce the effectiveness of the
seat belt and increase the risk of injury in a collision.
Seating and Safety Restraints
71