Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 453Get this manual

Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 453

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Water Pump 1 If water tube seal stayed on water tube (inside of drive shaft housing) when gear housing was removed, pull water tube seal from water tube

2 Inspect gear lubricant for metal