2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 65Get this manual
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IGNITION AND ELECTRICAL TESTING IGNIION SYSTEM REMOVAL Remove: Recoil stater Flywheel nut Washer Flywheel Flywheel key
9.915 and 20 through
34 in (19diameter holes (3) 120 ap