1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 189Get this manual
Midsection Adjustment40, 48, 50 Steering Friction Adjustment
steering friction adjustment is preset at the factoryReadjust after 20 hours operation, and when necessary
'" The steering friction should be adjusted so motor torque does not swing motorDo not overtighten for "hands off" steering, which could result in loss of controlWith motor mounted to boat, adjust steering friction by turning screwIdle Speed Adjustment
r:;J The idle speed adjusting knob is located on steering handleTurning knob clockwise increases idle speed; turning counterclockwise decreases idle speedMinimum Trim Angle Adjustment
r:;] The stern bracket has three positions for adjusting motor's minimum trim angleThe motor is shipped with tilt pin in first holeThis will be the best position for most boatsOn some boats it may be advisable to limit the amount of trim "IN" that can be usedThis may be due to large transom angle, the boat loading, or other reasonsIf it is necessary to limit the trim angle, then: