1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 51Get this manual

1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 51

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9 Check pinion teeth for chips, cracks or excessive wear
ARMATURE INSPECTIONTESTING

12 Inspect the commutator surface of the armature for burnt marks and dirt in commutator grooves1