2005 Polaris Sportsman 700/800 EFI Service Manual, Page 274Get this manual
ELECTRICAL
IGNITION SYSTEM TROUBLESHOOTING
No Spark, Weak or Intermittent Spark
G Spark plug gap incorrect Fouled spark plug Faulty spark plug cap or poor connection to high tension lead Related wiring loose, disconnected, shorted, or corroded Engine Stop switch or ignition switch faulty ETC switch misadjusted or faulty Wire harness or connections wet, corroded Poor ignition coil ground (e.gcoil mount loose or corroded) Incorrect wiring (inspect color coding in connectors etc) Faulty ignition coil winding (measure resistance of primary and secondary) Sheared flywheel key Flywheel loose or damaged Faulty ECU