B4a instruction manual – American Aimers B4A User Manual
Page 3

B4A manual page 3
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8/13/99
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B4A Instruction Manual
Page 3
2. Place aimers at the center line of each wheel on one side of the vehicle (Fig. 2). Unit B must be placed at the
front wheel with the target facing to the rear. Unit A must be placed at the rear wheel with the target facing front.
3. Level each unit by adjusting the thumb adjusting screw on each OWNER'S CALIBRATION FIXTURE. Turn
the screw either clockwise or counter-clockwise until the level vial bubble registers in a centered, level position.
4. Look into top port hole of unit A. Turn horizontal knob until the split image is aligned (Fig. 3).
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