1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 264Get this manual
Trim Sending Unit AdjustmentFasTrak 1Tilt the engine and engage the mooring bracket
2Temporarily, install PIN 387278 thrust rod in the No.3
rn 3Loosen thebesending unit screws until only snug, so the pivotedsending unit can
4Disengage the mooring bracketLower the engine against the thrust rod5Observe the trim gaugeIf the needle does not show center positiontilt the engine up and adjust the sending unit by pivoting it up or down6Lower the engine against the thrust rod to verify adjustmentRepeat Step 5, if necessary7After adjustment is correct, tilt the motor up, tighten the two sending unit screws, and remove the thrust rod