Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 86Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 86

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CHECKING POSITIVE BRUSHES AND TERMINALS 1 Connect ohmmeter (A scale) leads between positive brushes Brush Replacement
ohmmeter on the negative brush and the other lead on the end cap (bare metal