1996 Johnson Evinrude "ED" 90 LV 125C, 130, 200, 225, 250 Service Manual, P/N 507128, Page 60Get this manual
Idle Speed Note The air silencer cover must be installed to accurately adjust the engine's idle speed1The boat and engine must be in the water under normal operating conditions with the correct propeller installedThe boat's movement must be unrestrainedThe boat must not be tied to dock or trailer2Start the engine and allow it to reach normal operating temperatureThe engine temperature must be above 96 (36 C) before proceeding3Check idle RPM in FORWARD gear with an accurate tachometer []]4Stop the engineLoosen locknut and adjust the idle
speed screw Refer to chart for idle speed Turn screw clockwise to decrease idle speed Turn screw counterclockwise to increase idle speedIdle Speed 125WT V6 250 300 650 50 650 50 650 50 700 50 Timing Verification ATDC ATDC ATDC ATDC