Suzuki DF25/DF30 Four Stroke Service Manual, Page 281Get this manual
DF2530 "K3" (2003) MODEL 12-13
ENGINE CONTROL AND ELECTRICAL
IGNITION COIL The ignition coil has been changed in secondary coil resistance09930-99320Digital tester Tester range(Resistance)
EarlyNone
LateS12
Secondary side 1Remove spark plug cap from high tension cord2Connect tester probe to Black coil lead wire and high tension cord as shownIgnition coil No.1 No.2 No.3 3Measure resistanceSecondary coil resistance4.8 7.2 If measurement exceeds specification, replace ignition coilH.T cord