1990 Johnson Evinrude "ES" Colt/Junior thru 8 Service Manual, P/N 507870, Page 192Get this manual
Midsection Adjustments Tilt Friction Adjustment
1101 Use a
916 inwrench to tighten the tilt shaft nut only enough to control the return of the gearcase from TILT to RUN position
DO NOT overtighten, as doing so will increase the pressure required to tilt the motor if an obstruction is hitFailure to tilt when hitting an obstruction can cause serious damage to the motorSteering Friction Adjustment
Adjust steering friction with motor mounted to boat by loosening or tightening screwSteering friction should be adjusted so that slight drag is felt when turning'The steering friction adjustment should not be over-
i tightened to allow "hands off" steering which could result
in loss of controlIdle Speed Adjustment
1121 The
idle speed adjusting knob is located on the steering handleTurning clockwise on the knob increases idle speed, turning counterclockwise decreases idle speedMake certain that throttle grip is in slow position and the motor is at normal operating temperature before making the idle speed adjustment