2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 248Get this manual
FRONT AND REAR BRAKES 2Install: brake pads brake pad spring
NOTE: Always install new brake pads and brake pad spring as setaConnect suitable hose tightly to the brake caliper bleed screw 2Put the other end of this hose into an open containerbLoosen the brake caliper bleed screw and, using finger, push the caliper piston into the brake calipercTighten the brake caliper bleed screwBrake caliper bleed screw Nm (0.6 kg, 4.3 ft lb)