2006-2009 Suzuki LT-Z50 QuadSport ATV Factory Service Manual, Page 187Get this manual
SERVICING INFORMATION
ELECTRICAL
NO SPARKING OR POOR SPARKING Symptom, possible causes and remedy Defective CDI unit Defective ignition coil Defective spark plug Defective generator coil Loose connection of lead wire Open-circuited wiring connectionsReplaceReplaceReplaceReplaceConnect or tightenCheck and repair