Tohatsu 4 Stroke MFS 2/2.5/3.5A Outboards Service Manual, Page 130Get this manual
26) Inspection of Gear Case 1Check skeg area and torpedo-like front area for cracks and damageReplace if necessary
27) Assembly of Gear Case
Do not reuse removed bearing1Install bearing with numbered side up to gear case to specified depthInstallation Depth88.10 mm0.05 mm (3.4685 in0.0020 in) If special tool is not available and thus the above depth cannot be maintained, order shaft ass'y and gear case ass'yBearing AttachmentPN3AB-99905-0 Center PlatePN3AB-99701-0 Driver RodPN3AB-99702-0