1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 281Get this manual

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Troubleshooting the "Up" Circuit (When "Down" Circuit is OK) Connect Voltmeter RED lead to Point 10 and BLACK lead to groundDepress the "Up" trim button
Battery Voltage Indicated:

N

• • TGB
  • Arctic Cat
  • Bombardier
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• • Honda
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