1997 Johnson Evinrude "EU" Accessories Service Manual, P/N 507270, Page 32Get this manual
Adjustments
Throttle Handle FrictionIncrease throttle handle friction to eliminate "throttle creep" during operation by turning the throttle friction knob clockwiseDecrease the friction by turning the knob counterclockwiseIdle RPMIncrease engine idle RPM by turning the idle RPM knob clockwiseDecrease idle RPM by turning the knob counterclockwise