1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 301Get this manual
BRUSH REPLACEMENT 1Brush replacement is required if brushes are pitted, chipped, or if distance (a) between the brush pigtail and end of brush holder slot is 116 inor lessCheck distance with armature installed a a
18466Metal Connectors 18457116 in