1999 Ski-Doo Factory Shop Manual Volume Two, Page 79Get this manual
Section 03 TROUBLESHOOTING Subsection 05 (ELECTRICAL SYSTEM)
SYMPTOM CONDITION TestInspection
NOISE OCCURENCE WHEN STARTING ENGINENORMAL USE1Check if ring gear is well-mounted to drive pulley inner halfaLoose andor broken boltsRetighten bolts using thread locker or replace ring gear and drive pulley inner half
SYMPTOM CONDITION TestInspection
ELECTRIC STARTER SOMETIMES DOES NOT WORK WHEN TURNING IGNITION SWITCHNORMAL USE1Check battery cables and starter wiresaCorroded andor loose connection(s)Clean andor retighten2Check fuseaOxidized fuseClean3Check wiring harness connectionsaOxidized connectionsClean or replace defective terminals4Check ignition switchaDefective contacts in ignition switchReplace5Check solenoid of electric starteraShorted solenoid wiring harness or eroded contact washerReplace