1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 199Get this manual
Water Pump Reassembly and Installation 6Place seal on longer shoulder side of Oil Seal Driver (91-13949) with seal lip away from shoulder7Apply Loctite 271 on O.Dof seal; press seal into water pump base until tool bottomsTEFLON COATED LIPFLAT BROWNISH BLACK COLORLIP FACES TOWARD POWER HEAD
8Place seal on shorter shoulder side of Oil Seal Driver (91-13949) with seal lip toward shoulder9Apply Loctite 271 on O.Dof seal; press seal into water pump base until tool bottoms10Lubricate lip of each seal with Quicksilver 2-4-C w Teflon (92-825407A12)LIP FACES TOWARD GEAR CASEGLOSS BLACK COLOR