Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 201Get this manual
9Apply Loctite Grade "A" to outer diameter of propeller shaft oil seals10Place one seal on longer shoulder side of Oil Seal Driver (91-31108) with lip of seal away from shou lderPress seal into bearing carrier until seal driver bottoms against bearing carrier aOil Seal (Lip of Seal Up)
b011 Seal Driver (91-31 08)
cSeated
13Apply light coat of Qu icksilver Bearing Assembly Lubricant onto the outside diameter of reverse gear ball bearingaOil Seal (Lip of Seal Down)Oil Seal Driver (91-31108)Seated