2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5006590, Page 72Get this manual
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ELECTRICAL BATTERY CHARGING SYSTEM
Tester probe connection
Remove spark plugsBattey
(Black) Yellow
Red charge coil sist0.9 to 1.3 (80 coil) 0.3 to 0.44 (120 coil)