1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 235Get this manual
CLAMPSWIVEL BRACKETSDRIVE SHAFT HOUSING
4Slide piece of rubber hose over screwdriver to prevent paint damage on outboard componentsPry up on lower cowl panSlide mount off of stud
a-Rubber Padded Bar b-Mount 5Pry up on lower cowl pan to slide new mount over stud just enough to pass over top lip on lower cowl panRemove pry barPush down on top of outboard (to seat mount)Mount should align into place