Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 188Get this manual
GEAR HOUSING
Propeller Shaft
1Remove reverse gear (a) and washer (b)2Remove cam follower (c) and guide (d)
3Using punch, tap cross pin from sliding clutch (a)Leave punch in hole to retain spring at this time4Put end of shaft (b) against solid objectRemove pu nch (c) from sliding clutch (d)and slowly release spring compression