2001 Mercury Mariner 50-60HP Factory Service Manual, Page 236Get this manual
CYLINDER HEAD
Oil Pump Installation
1Place O-ring seals on the oil pumpLubricate the O-rings with oil2Prime the oil pump by pouring approximately fl oz (30 ml) of engine oil into the oil pump body
aO-Ring SealsPour Approximately fl oz (30 ml) of Engine Oil into the Oil Pump Body 3Align oil pump shaft with the camshaft and install the oil pump4Fasten with boltsTighten bolts to the specified torque