2007 Arctic Cat DVX/Utility 250 ATV Service Manual, Page 20Get this manual
Ignition Timing The ignition timing cannot be adjusted; however, verifying ignition timing can aid in troubleshooting other componentsTo verify ignition timing, use the following procedure1Attach the Timing Light (pn 0644-296) to the spark plug high tension lead; then remove the timing inspection plug from the left-side crankcase cover2Using the Arctic Cat Tachometer (pn 0644-275), start the engine and run at 1000 RPM; ignition timing should be BTDC ("F" mark)3Install the timing inspection plugIf ignition timing cannot be verified, the rotor may be damaged, the key may be sheared, the trigger coil bracket may be bent or damaged, or the CDI unit may be faulty
2Using care not to bend or deform the spring clip, release the two ends of the spring clip from the light housing; then remove the bulb from the headlight housing
3Install the new bulb into the headlight housing; then secure with the spring clip4Connect the three-wire connector to the bulb; then install the bootTAILLIGHT-BRAKELIGHT
HeadlightTaillightBrakelight