1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 352Get this manual
Trim Sending Unit Adjustment It might be necessary to adjust the trim sending unit to coincide with the trim gauge at full trim-up positionTo do this, proceed as follows: 1Turn ignition key to the ON position2Raise the engine with the tilt switch to maximum trim-up position
1321 3Move the angle adjusting rod to the center hole13314Loosen the sending unit screws until only snug, so the
sending unit can be pivoted5Lower the engine all the way down against the angle adjusting rod