All Models (Front)

Check that vehicle is full of fuel, oil, and water, and that tires are properly inflated. Press down on front bumper and slowly release, then lift up on bumper and slowly release, this will settle front suspension.
On XJ6 and XJ12 models, measure distance between center of outer headlight and ground on both sides of vehicle. Height should be 24.6" (611 mm) minimum.
On XJS models, measure distance between lower face of crossmember and ground on both sides. Height should be 6.0" (152 mm) minimum, plus thickness of slip plates.
On all models, adjust by installing or removing spring spacers from front coil springs.
NOTE: Spring spacers are 1/8" (3.2 mm) thick and will change riding height approximately 5/16" (7.9 mm).