1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 303Get this manual
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ReassemblyMotor and Pump NOTE: Driveshaft is loose part and may fall out of position1 Install pump onto power trim manifoldInsure O-rings are in proper locationsSecure with two (2) screwsTorque screws