Honda BF115A, BF130A Outboard Motors Shop Manual., Page 285Get this manual
5) Hold the vertical shaft upright (with the pinion gear toward up) and secure the vertical shaft6Set the commercially available depth gauge at the gauge adapter of the pinion gear side as shownMeasure the vertical shaft length (dimension "D") and record it
TOOL: Gauge adapter, 80 mm
07WPJ-ZW50100
7) Assemble the outer race and inner race of the 30 62 21.25 taper roller bearing81 Measure the bearing height from the outer race end to the inner race end as shown, and record the measurement