1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 216Get this manual
Reference Views b f
Steering Arm Swivel Pin Thrust Washer (Aluminum side towards swivel bracket) Spacer (Upper) O-Ring
Swivel PinSteering Arm
Push Rod End Nut Push Rod Yoke Cotter Pin Clevis Pin Reverse Lock Hook Shaft Arm Reverse Lock Hook Shaft Return Spring Tilt Pin
Non Power Trim Reverse Lock Hook (Shown From Above)