2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 87Get this manual
ELECTRICAL ELECTRIC STARTER SYSTEM Check for continuity across magnetic switch "S" terminal and "M" terminalIf no continuity, replace coilPlace plunger against flat surface and push the magnetic switch downWith switch held down, check for continuity between terminal "8" and terminal"M If no continuity, replace the magnetic switch and or plunger