16Please follow below instruction to adjust headrest4.3.1 Use #3 Allen key to loosen the hex socket head screw on fixation ring,adjust the fixation height of rod and lateral direction angle. (See Figure4.25)4.3.2 Assemble the headrest assembly to clamp ring by pin-hole positioning,tighten by using the lever of ratchet bolt (See Figure 4.26)4.3.3 Remove rubber cap and use #5 Allen key to loosen screws, can adjustheadrest linkages. Loosen the screw that the nearest headrest pad toadjust the headrest pad fitting. (See Figure 4.27、Figure 4.28)4.3.4 Use #5 Allen key to loosen hex socket head screw near the upper ballhead, adjust the fitting of the headrest pad. The adjustable curvedheadrest can change left/right pad support angle. (See Figure 4.29)4.3.5 Unzip the cover upholstery, use #5 Allen key to loosen hex socket screwof hinge near the left/right pad, can adjust the pad rotation angle. (SeeFigure 4.30, 4.31)Figure 4.25 Figure 4.26 Figure 4.27 Figure 4.28Figure 4.29 Figure 4.30 Figure 4.314.4 Detachable Armrest Adjustment4.4.1 Height-adjustable armrest4.4.1.1 Use #5 Allen key and #13 wrench to adjust height (4 positions) (See