Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 469Get this manual
BIGFOOT GEAR HOUSING
6Assemble Pinion Gear Locating Tool ing bolt at this time
as shown; do not tighten collar
aArborGauging Block; Install With Numbers Away From Split CoilarBolt; Gauging Block Retaining
dSplit Collar
eBolt; Collar Retaining
fSnap Ring
7Insert tool into forward gear assembly; position gauging block under pinion gear as shown
Gauging Block