2001 Ski-Doo Mini Z Factory Shop Manual, Page 50Get this manual
Section 03 TROUBLESHOOTING Subsection 05 (ELECTRICAL SYSTEM)
ELECTRICAL SYSTEM
SYMPTOM CONDITION TestInspection HEADLAMP NOT LIGHTINGWHITE BULB1Check bulbaBurnt bulbReplace bulbCONDITION TestInspection BROKEN ELEMENT1Check for loose headlamp housing and bulb socketaVibration problemTighten headlamp mounting screwsLock bulb in socketReplace bulbCONDITION TestInspection MELTED FILAMENT (ENDS OF ELEMENT HOLDER) AND BLACK BULB1Check voltage at headlamp at different speedsIt must not be above 15 VacaExcessive voltage in lighting circuitEnsure proper wire connections and groundingRetestSYMPTOM CONDITION TestInspection HEADLAMP DIMINGNORMAL USE1Check voltage at headlamp at different speedsIt must not be below 11 VacaInsufficient voltage in lighting circuitReplace voltage regulator and retestbWires are worn or looseEnsure proper wire connections and groundingRetest