1999 Ski-Doo Factory Shop Manual Volume Three, Page 86Get this manual
Section 03 TROUBLESHOOTING Subsection 05 (ELECTRICAL SYSTEM)
SYMPTOM CONDITION TestInspection
RER (ROTAX ELECTRONIC REVERSE) DOES NOT WORKNORMAL USE1Check idle speedaWrong idle speedAdjust according to specification (refer to TECHNICAL DATA 10)2Check spark plugaFaulty spark plugReplace3Check drive belt deflectionaWrong deflectionAdjust according to specification (refer to TECHNICAL DATA 10)4Check carburetor synchronization and air screw adjustmentaWrong adjustmentAdjust according to specification (refer to TECHNICAL DATA 10) and read carburetor subsection5Check electrical connectionsaBad electrical connections or damaged wiresClean or replace6Check MPEMaFaulty MPEM