2009 Yamaha F40 Outboard Service Manual, Page 289Get this manual
Bracket unit
Removing the friction plate
1Remove the friction plate bolts a, and then remove the friction plate assembly b
2Turn the steering lock shaft until the thread side faces toward the surface of the bracket b
Disassembling the friction plate
1Remove the friction plate nut and the friction adjusting nut b, and then remove the steering lock washer c, the friction pieces d, the collar e, the washers f, the steering lock lever g, the collar h, the bracket i, the steering lock shaft j, and the bolt k