2003 Ski-Doo REV Series Factory Shop Manual, Page 85Get this manual
Section 03 TROUBLESHOOTING Subsection 05 (ELECTRICAL SYSTEM)
ELECTRICAL SYSTEM
SYMPTOM CONDITION TESTINSPECTION STARTER DOES NOT TURNNORMAL USE1Check 30 and fusesaBurnt fuseCheck wiring condition and replace fuse2Check continuity of starter switch contact pointsaPoor contact of starter switch contact pointsRepair or replace switch3Check continuity between starter switch and MPEMaOpen circuitRepair4Check continuity between MPEM and solenoid switchaOpen circuitRepairSYMPTOM CONDITION TESTINSPECTION STARTER TURNS BUT DOES NOT CRANK THE ENGINENORMAL USE1Check battery capacityaShorted battery cell(s)Replace2Check battery chargeaLow batteryRecharge battery and check recharge system and wires3Check wire connectionaInadequate connection (too much resistance)Clean and reconnect4Check brushesaPoor contact of brushesReplace brushes5Check commutatoraBurnt commutatorMachine commutator on latheRespect outer diameter wear limitRefer to ELECTRIC STARTER6Check engineaEngine seizedOverhaul the engine