Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 450Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 450

BIGFOOT GEAR HOUSING
4Remove shift cam from housing
5Replace shift cam if worn60 Bigfoot Shown

aShift Cam
NOTE: If shift shaft splines are rough, shift shaft sealips will be cut during removaVinstalla lion
SRemove shift shaft bushing and clip from shift shaft7Replace shift shaft if splines are worn or shaft is twisted