Honda BF115A, BF130A Outboard Motors Shop Manual., Page 401Get this manual
10)Calculate the gap (distance E) between the outer race and inner race using the measurements obtained in the step and and the following formulaFormula: Bearing heightOuter race heightGap (distance E) Example: When, bearing height from the outer race end to the inner race end is 40.1 (1.58 in), And, outer race height is 34.9 (1.37 in): 40.134.95.2 Therefore, the gap (distance E) is 5.2 (0.20 in)11)Determine the calculation value using the vertical shaft (distance )obtained step and the gap (distance E) obtained in step 10 and the following formulaFormula: Vertical shaft length (distance D) 147.45Calculation value+ Gap (distance-
Example: When, vertical shaft length (distance D) is 142.3 (5.60 in), And, gap (distance E) is 5.2 (0.20 in): 142.35.2147.450.05 Therefore, the calculation value is 0.05 (0.002 in)12)Cross reference the calculation value and the engagement mark located on the trim tab installation part of the gear case, and select the shim of the appropriate thickness from the shim selection table accordinglyShim type table