1999 Ski-Doo Factory Shop Manual Volume Two, Page 286Get this manual

Section 06 ELECTRICAL Subsection 06 (TESTING PROCEDURE)
TESTING PROCEDURE
GENERAL
The following chart gives the engine types with their implemented systemENGINE TYPE 494, 583 and 670 443 and 503 IGNITION SYSTEM NIPPONDENSO (CDI) TRIGGER COIL DUCATI (CDI) CHARGING SYSTEM OUTPUT 220 240

CDI System Identification

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives