1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 271Get this manual
NON BIGFOOT GEAR HOUSING
Forward Gear Bearing Race Installation
Install race into housing using Mandrel (91-13658) and Bearing Carrier Tool (91-13664)91-13664 53017
91-13658
a-Race b-Mandrel (91-13658) c-Bearing Carrier Tool (91-13664)