Honda BF135A, BF150A Outboard Motors Shop Manual., Page 581Get this manual
Quality of the image is intentionally reduced!
BF135ABF150A 12) Remove the tilting bolt cap and loosen the 25 2.0 mm selflocking nut or the 78-14 UNF self-locking nut
[1] RSTERN BRACKET
If it is hard to remove the lower cylinder