To adjust the depth of the knee supports, loosen the knob on thecross bar of the knee support . Slide knee support to the required dimension and retighten securely. To adjust the height of the knee supports, loosen the two knobs on the side and behind the knee support.
Slide knee supports to the required dimension and retighten securely. For angle adjustment of the knee supports, you will need to lift the lever slightly and then turn clockwise to tighten and counter-clockwise (by raising it) to reposition the lever in the proper place.