1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, 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 34 BTDC
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3To .adjust, stop the enginetocontact with rotating partsLoosen the timing adjustment screw nut Turn the adjustment screw in or out, as necessary, to correct the timingOne turn clockwise retards timing about 1; one turn counterclockwise advances timing about 1