Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 445Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 445

BIGFOOT GEAR HOUSING
8Replace drive shaft if splines are worn or twisted 9If bearing surface is damaged, replace drive shaft and corresponding bearing
IMPORTANT: Do not tighten vise against drive shaft10If wear sleeve is deeply grooved allowing water to enter gear case, remove (and discard) sleeve using Universal Puller Plate (91-37241) and mallet