1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175, P/N 507874, Page 270Get this manual
Trim Tab Adjustment The boat may be slightly easier to steer in one direction or the other due to steering forces or other reasonsTo check this, run the boat in straight line with balanced load in an area where current and wind will not be factor
INote single trim tab adjustment will only relieve steeringsingle effort under one set of speed, trim and load conditionsNo
setting can relieve steering effort under all speed, trim and load conditions
1Turn the steering wheel in both directions to determine the direction that requires the least amount of steering effort2Loosen the trim tabIf the boat: