Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 306Get this manual

Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 306

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Troubleshooting the "Up" Circuit
No Voltage Indicated: Connect Voltmeter red lead to Point 5 If battery voltage is indicated, trim switch is faultyIf no battery voltage, check for loose or corro