2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 102Get this manual
ADJUSTING THE FRONT BRAKEADJUSTING THE BRAKE LEVERADJUSTING THE REAR BRAKE EBS00080
CHASSISADJUSTING THE FRONT BRAKE 1Measure: brake lever free play Out of specification Bleed the front brake systemRefer to "BLEEDING THE HYDRAULIC BRAKE SYSTEM"Brake lever free play (at the end of the brake lever) mm (0 in)