1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 295Get this manual
REASSEMBLY IMPORTANT: Components must be clean for reassemblyAny debris in the system can cause the system to malfunction 4Install end cap
NOTE: Refer to "Tilt Ram Components" for proper O-ring sizes1Apply Quicksilver Power Trim and Steering Fluid on O-rings prior to reassembly2Install O-ring on Memory Piston Cup and install in cylinderaEnd Cap
5Install components on rod
aO-ringMemory Piston Cup
51372 51340 Piston O-ring Check Valve Assembly (7) Washer Bolt or Locknut (Tighten securely)