Honda BF115A, BF130A Outboard Motors Shop Manual., Page 236Get this manual
HONDA BF115A130A
3) Insert the bearing and attachment that were set in the step into the shaft of the special tool as shownInsert the attachment into the shaft from the reverse side of the attachment where the pin is provided4) Insert the shaft of the special tool into the cylinder block (Exhaust side)
Insert the shaft with care not to cause the guide set in the block to come out of position
5) Align the pin of the special tool with the cutout in the shaft as shown, and tighten the pin against the cylinder blockScrew the finer threads of the pin into the cylinder block