1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 272Get this manual
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NON BIGFOOT GEAR HOUSING
a-Bushing b-Mandrel (91-824785A1) 2 Apply Loctite 271 to O.Dof seal and with lip facing bushing, press seal into carrier using Mandrel (91-824785A1)
a b91-8