1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 132Get this manual
Oil Pump Assembly 12
Oil Pump Installation
1Place O-ring seals on the oil pumpLubricate the O-rings with oilPrime the oil pump by pouring approximately floz(30 ml) of engine oil into the oil pump body
Reassemble the oil pump assemblyLubricate the outer and inner rotors thoroughly with engine oila e
Cover Seal Outer Rotor Inner Rotor Shaft Cross Pin
Fasten cover with two screwsApply Loctite 222 to threads Tighten screws to the specified torque
aO-Ring SealsPour Approximately floz(30 ml) of Engine Oil into the Oil Pump Body