1997 Johnson Evinrude "EU" 9.9 thru 30 2-Cylinder Service Manual, P/N 507263, Page 208Get this manual
Midsection Adjustments9.915 Tilt Friction Adjustment (Tiller Handle Models) mUse 916 inwrench to tighten the tilt shaft nut only enough to control the return of the gearcase from TILT to RUN positionSteering Friction Adjustment Adjust steering friction with motor mounted to boat by loosening or tightening screw with screwdriverSteering friction should be adjusted so that slight drag is felt when turningMinimum friction is required when remote steering is usedDo not overtightenThe steering friction screw is not intended to allow "hands off" steering
The idle speed adjusting knob is located on the steering handleTurning the knob clockwise increases idle speed, turning it counterclockwise decreases idle speedMake certain that throttle is in SLOW position and the motor is at normal operating temperature before making the idle speed adjustmentMotor should idle at recommended RPM in gearThrottle Friction Adjustment