1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 74Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 74

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CHARGING AND STARTING SYSTEM

aTachometer moduleEngine ground METER TEST LEADS RED GRAY BLACK Open, OUCH or OL OUCH, DIODE BLACK OR GROUND TACHOMETER MODULE LEADS METER SCALE READING

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