12. COOLING SYSTEM GRAND DINK 125/150 Install the water pump shaft and shaft inner Snap Ring Water Pump Shaft bearing into the waster pump assembly. Install the snap ring to secure the inner bearing properly. Inner Bearing Water Pump Assembly Install the dowel pins and a new gasket and then install the water pump assembly to the right crankcase cover. Tighten the 3 bolts to secure the water pump assembly. When installing the water pump assembly, aligning the groove on the water pump shaft with the tab on the oil pump shaft. Bolts Mechanical Seal Seal Washer (Porcelain) WATER PUMP/IMPELLER INSTALLATION When the mechanical seal is replaced, a new seal washer must be installed to the impeller. Impeller 12-13