1997 Ski-Doo Factory Shop Manual Volume Three, Page 47Get this manual
Section 02 TROUBLESHOOTING Sub-Section 05 (ELECTRICAL SYSTEM)
6Verify condition of ignition generator coilsa.Mechanically damaged partVibration problemElectrically damaged partTighten mounting screwsReplace coils7Verify CDI (Capacitor discharge ignition) modulea.Mechanically damaged partVibration problemElectrically damaged partTighten mounting screwsReplace CDI module, retest and verify ignition timingSYMPTOM CONDITION TestInspection SYMPTOM CONDITION TestInspection CONDITION TestInspection ENGINE STALLS AT LOW SPEED 1Verify items 4, and aboveIRREGULAR ENGINE SPEED AT HIGH SPEED 1Verify items 4, and aboveAT LOW SPEED 1Verify items and above and trigger coilflywheel protrusion air-gapaAir-gap too largeReadjust air-gapENGINE IS MISFIRING ERRATIC SPARK AT SPARK PLUG RIDING ON WET SNOW 1Verify if spark plug wires andor spark plug cap seals are sealing-out moisturea.Defective wires andor sealsReplace defective part2Verify if ignition system wiring harness connectors are in good condition andor are sealing-out moisturea.Loose connectors, corroded terminals or defective partsClean terminals and apply silicone dielectric greaseReplace defective partsCONDITION TestInspection NORMAL USE 1Verify misfiring by observing flash of stroboscopic timing light; unplug connectors between magnetogenerator and vehicle wiring harness to isolate problemCheck condition of connectorsa.Defective spark plug andor cablescapsDefective electrical system wiring harness andor accessories andignition cut-out switchesCondition of connector terminalsReplace defective parts andor repair damaged wiresReplace defective switch(es)Clean terminals and apply silicone dielectric grease