1992 Johnson Evinrude "EN" 9.9 thru 30 Service Manual, P/N 508142, Page 47Get this manual
Electric start modelsTiming mark must align with appropriate mark on the ELEC CD flywheel grid Rope start modelsTiming mark must align with appropriate mark on the CD flywheel grid Maximum Spark Advance 20 3To .adjust, stop the engine.tocontact with rotating partsLoosen the timing adjustment screw nut Turn the adjustment screw in or out, as necessary, to correct the timing One turn clockwise retards timing about 1; one turn counterclockwise advances timing about 14Tighten the nut and recheck the timing adjustmentIdle Speed 1The boat must be in the water, under normal operating conditions, with the correct propeller installed The boat's movement must be unrestrainedThe boat must not be tied to dock or trailerf61 2On tiller models, turn the idle adjusting knob counterclockto the full SLOW position3Start the engine and allow it to reach normal operating temperature4When speed is reduced, engine must idle at 675 25 RPM in FORWARDf7'l 5On tiller models, move the throttle cable bracket change idle speed