1991 Johnson/Evinrude EI 60 thru 70 outboards Service Manual, Page 48Get this manual
Idle Speed Adjustment 1The 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 temperature3Check idle RPM in FORWARD gear with an accurate tachometer'" 4Stop the engine to prevent contact with rotating partsAdjust the idle speed screw to obtain recommended RPM ill
Turn screw counterclockwise to lower idle speed Turn screw clockwise to raise idle speed&
5Start engine and recheck idle speedStop the engine
Synchronization and Linkage Adjustments 65WMLK, WMYK
It is important that this step-by-step procedure be followed in sequence and be performed exactly as written to ensure consistent engine idling and smooth operation throughout the RPM rangeThe flywheel has two timing gridsBe sure the flywheel grid that is not marked "Rope" is used for remote control model adjustments