Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 173Get this manual

Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 173

CYLINDER BLOCK AND CRANKCASE
24Reinstall the oil pump25Prime the oil pump by pouring approximately fl oz(30 ml) of engine oil into the oil pump inlet side