1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 80Get this manual
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Power Trim System Wiring Diagram (4 Cylinder Models Using COMMANDER 2000 Side Mount Remote Control)
23885 Power Trim Pump Motor Trim Solenoid "UP" Trim Solenoid "DOWN" Engine Starter Motor Solen