1998 Johnson Evinrude "EC" 40 thru 55 2-Cylinder Service Manual, P/N 520206, Page 186Get this manual
Midsection Adjustments40RS, 40, 50SPL, 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 on boat, adjust steering friction by turning screwIdle Speed Adjustment
The idle speed adjusting knob is located on steering handleTurning knob clockwise increases idle speed; turning counterclockwise decreases idle speed
Throttle Friction Adjustment Throttle friction screw should be adjusted ONLY to the point that slight drag is felt when accelerating or deceleratingDO NOT overtightenMinimum Trim Angle Adjustment
W The stern bracket has three positions for adjusting motor's