Honda BF115A, BF130A Outboard Motors Shop Manual., Page 398Get this manual
BFI 15AmBFI3OA 4) Set the vertical shaft upright on the hydraulic press with the pinion gear side toward up as shown[I] PRESS 5) Install the taper roller bearing on the vertical shaft using the hydraulic press121
PINION GEAR
Be sure that the ends of the special tool securely set on the inner part of the taper roller bearing and on the hydraulic press table respectively+Take care not to damage the threaded part (i.epinion gear nut installation part) at the end of the vertical shaftVERTICAL