02.Assemble
11 Head strap Adjustment SF 100 RS 101
After the adjustment. Firmly pull and insert the long head strap from the left side into the left of the head strap clip hole. Then firmly pull and insert the short head strap into the left of the head strap clip hole. Next, firmly pull and insert the long head strap into the head strap clip hole. Then firmly pull and insert the upper short head strap into the head strap clip hole.