1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 184Get this manual

1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 184

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Pinion Gear, Drive Shaft, and Forward Gear 1 Hold drive shaft using Drive Shaft Holding Tool (91-56775); remove (and discard) pinion nut2 Remove drive shaft, pinion gear, bearing and forward gear 3 Re