Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 87Get this manual
bINSPECTION VERTICAL SHAfTIPlNION GEAR I) Check the pinion gear for wear or damage, replace if nec-
essary2) Check the mating section of the vertical shaft and pinion gear for wear or damage, replace if necessary
3) Measure the O.D.of the vertical shaft at the needle bearing or bushing sectionIf the measurement is lower than the service limit, replace the vertical shaft and check the bushing or needle bearing in the gear case and water pump housing (P4-13)
[VERTICAL [2] PINION GEAR
standard
S and types:7m7 (0.5101 in11
14'98915'000 14.97 (0.589 in11 (0.59010.5906 in)
FORWARD BEVEL GEAR
Check the clutch dogs and gear wear damageMeasure I.Dof the gearStandard Service limit
1117.00017.018 (0.66930,6700 in) 17.04 m
BEARING
S and types: Check the ball bearing by turning the inner race with your fingerReplace the ball bearing with new one if the bearing inner race does not turn smoothly or quietlyXL type: Check the taper roller bearingReplace the bearing with new one if it is worn or damagedCheck the needle bearing for wear or damageReplace if necessary