2003-2006 Kawasaki KFX400 service manual, Page 293Get this manual
ELECTRICAL SYSTEM
IGNITION COIL RESISTANCE Remove the front fender, side cover, fuel tank( 6-4) Disconnect the ignition coil lead wires and spark plug cap, and remove the ignition oilMeasure the ignition coil resistance in both the primary and secondary windings using the multi circuit testerIf the resistance in both the primary and secondary windings is close to the specified values, the windings are in sound condition
09900-25008: Multi circuit tester set Tester knob indication: Resistance () Ignition coil resistance Primary: 0.1 1.0Terminal Ground) Secondary: 12 20 (Spark plug cap Terminal)