2011 Arctic Cat 366SE ATV Service Manual, Page 85Get this manual
Problem: Spark plug electrodes overheat or burn Condition 1234Spark plug incorrect (too hot) Engine overheats Spark plug loose Mixture too lean
1234Replace plug Service cooling system Tighten plug Adjust carburetor
Problem: Magneto does not charge Condition
1Lead wiresconnections shortedlooseopen 2Magneto coils shortedgroundedopen 3Regulatorrectifier defective
1Repairreplacetighten lead wires 2Replace magneto coils 3Replace regulatorrectifier
Problem: Magneto charges, but charging rate is below the specification Condition Remedy
12345Lead wires shortedopenloose (at terminals) Stator coils (magneto) groundedopen Regulatorrectifier defective Electrolyte low Cell plates (battery) defective 12345Repairtighten lead wires Replace stator coils Replace regulatorrectifier Add distilled water Replace battery
Problem: Magneto overcharges Condition
1Internal battery short circuited 2Regulatorrectifier resistor damageddefective 3Regulatorrectifier poorly grounded