Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 106Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 106

CHARGINGSTARnNG SYSTEM
Brush Replacement
IMPORTANT: Replace brushes Ihat are pitted or worn to less than 14 in(S.4mm) in lengthb