. OPERATION OPERATION WARNING the desired support to 3 - 84 If the height of t he h eadrest is not properly adjusted, t he headrest cannot protect your head from being throw n back if the machine is hit f rom b ehind, a nd this m ay lead t o serious i njury . Before s tarting to travel, adjust the height of t he head rest so that t he c enter of the headrest is at the back of your head . Nev er remove the headrest. ADJUSTING HEADREST HEI Move the headre st up or down to adjust to the desired height ADJUSTING HEADREST ANG Tilt th e headrest t o the fro nt or re ar to set i t to the desired angle ADJUSTING LUMBAR SUPPORT TENSION Turn knob (5 ) to give your lumbar r egio