1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 208Get this manual
Midsection Adjustments9.915 Tilt Friction Adjustment (Tiller Handle Models)
Use 916 inwrench to tighten the tilt shaft nut only enough to control the return of the gearcase from TILT to RUN position
Steering Friction Adjustment
rn fA Adjust steeringscrew with screwdriverSteering boat by friction with motor mounted to loosening or tightening 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" steeringIdle Speed Adjustment