1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 54Get this manual

1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 54

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CHECKING POSITIVE BRUSHES AND TERMINAL Set ohmmeter to (R scale)Connect meter leads between POSITIVE brushesMeter must indicate full continuity or zero resistanceIf resistance is indicated, inspect le