2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 48Get this manual
COOLANT FLOW DIAGRAMS
Install the radiator outlet hose with the white paint mark parallel to the ground as shown Install the radiator outlet hose completely on the radiator pipe until the hose contacts the flange of the pipe 30 mm (1.18 in) Install the radiator outlet hose onto the water pump inlet pipe until the end of the hose reaches the middle of the blue paint mark on the pipe Align the white paint mark on the radiator inlet hose with the projection on the radiator pipe Install the radiator inlet hose onto the radiator pipe until the end of the hose contacts the projection of the pipe Install the radiator inlet hose onto the outlet pipe of the cylinder head water jacket until the end of the hose reaches the middle of the blue paint mark on the pipe