2003+ Suzuki DF9.9/DF15 four stroke outboard motors service manual, Page 47Get this manual
IGNITION AND ELECTRICAL
TROUBLESHOOTING
Perform the following ignition system tests when the engine is hard to start in order to determine if the cause is in the ignition or another system
START Check the spark conditionNo or weak sparks Check if the spark plug is in good condition(See page 2-7 OK Disconnect the engine stop switch lead wire (BlueRed)No or weak sparks Check the ignition coil resistance(See page 3-6 [Primary: 0.2 0.4[Secondary: 6.4 9.6 k] OK Check the spark plug cap for any evidence of the high-tension leakOK Check the spark plug cap resistance(See page 3-7 [Cap resistance: 12 k)] OK Check the condencer charge coil resistance(See page 3-4 [Coil resistance: 244 364OK Check the pulser coil resistance(See page 3-5 [Coil resistance: 155 233OK Check the CDI unit(See page 3-6 Out of specOut of specOut of specOut of specNot good Out of specSparks