1991 Yamaha Outboard Factory Service Manual 9.9 and 15 HP, Page 79Get this manual
Mount rubber and upper casing 1Remove the seal clamps, rubber seals, and nuts of the upper side mount rubbers2Remove the three bolts and nuts securing the lower mount rubber housings and remove the mount rubber housings (starboard and port side)Remove the upper casing from the swivel bracketRemove the four screws securing the protector, and disconnect the protector, seal and seal damper plate from the upper case Steering bracket and steering pivot shaft