1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 329Get this manual
Trim "Motor" Removal 1Secure power trim assembly in soft jawed vise2Remove screws securing end cap to reservoir and remove end cap
Trim "Motor" Disassembly
1Remove armature from motor frameNote position of washers on armature
51486ArmatureMotor FrameWasher (1 each end of armature)
Reservoir Assembly Removal