Honda Outboards BF40A/BF50A Service Manual, Page 147Get this manual
HONDA BF35A4SA
SHIM SELECTION
PINION GEAR SHIM
1) Install the 25 47 15 mm bearing and pinion gear over the vertical shaft and tighten the 12 mm special flange nuts
VERTICAL SHAFT
07LPJ- ZV301 00
TORQUE: 75 Nm (7.5 kg-m54.2 ft-Ibl
2) Attach the special tool to the vertical shaft as shown
VERTICAL SHAFT