1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 303Get this manual
ReassemblyMotor and Pump NOTE: Driveshaft is loose part and may fall out of position1Install pump onto power trim manifoldInsure O-rings are in proper locationsSecure with two (2) screwsTorque screws to 70 lbin(7.9 Nm)IMPORTANT: Install pump with location flat facing towards starboard transom bracket
51433MotorO-ringScrew (2)Torque screws to 70 lbin(7.9 Nm)
4Complete reassembly of Power Trim System as outlined in "Installation" on page 6B-15 and 6B-16
Priming Power Trim System
1Fill system with Quicksilver Power Trim and Steering Fluid or Automatic Transmission Fluid (ATF) Type or FARefer to "Fill, Check, and Purge" on page 6B-5IMPORTANT: Run Trim System in short "jogs" until pump motor primes and trim system movesIf trim motor is run without priming pump, driveshaft failure could result51433