Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 8Get this manual
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4050 Gear Ratio Gearcase Capacity Lubricant Type Forward Gear Number of Teeth Pinion Gear Number of Teeth Pinion Height Forward Gear Backlash Water Pressure Idle W.O.TPressure Test 5560 Gear Ratio Gea