1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 241Get this manual
If the boat pulls to the right (starboard), the trailing edge of trim tab must be moved to the rightIf the boat pulls to the left (port)the trailing edge of trim tab must be moved to the leftIf necessary, adjust trim tab as follows: Shift engine control into NEUTRAL and turn ignition key to "OFF" position Special Lubricant 101 (92-13872A1) 2-4-C Marine (92-825407 12) Install componentsLubricant wTeflon
NOTE: Loosen trim tab bolt sufficiently to allow trim tab to disengage from locking ridges in gear case before attempting to move tab00 NOT strike trim tab with hard object to make adjustments If boat pulls to the left, adjust trailing edge of trim tab to the leftIf boat pulls to the right, adjust trailing edge of trim tab to the right
Thrust Hub; Flat Surface Towards Propeller Propeller Tab Washer; Bend Tabs Down Against Nut Flats Locknut; Torque to 55 lbft(74.5 Nm)