2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 250Get this manual
WATER PUMP
ASSEMBLING THE WATER PUMP 1.Install: Oil seal New (into the water pump housing 2) NOTE: Before installing the oil seal, apply tap water or coolant onto its outer surfaceInstall the oil seal with socket that matches its outside diameter2.Install: Water pump seal New (into the water pump housing 2)
CAUTION:
Never lubricate the water pump seal surface with oil or greaseNOTE: Install the water pump seal with the special toolsMechanical seal installer 3: PNYM-33221, 90890-04078 Middle driven shaft bearing driver 4: PNYM-04058-1, 90890-04058