Ignition Timing - Arctic Cat DVX 400 2004 Service Manual

VOLTAGE (Taillight)
NOTE: Perform this test on the harness side of
the connector. Also, the ignition switch should be
in the LIGHTS position.
1. Set the meter selector to the D.C. Voltage position.
2. Connect the red tester lead to the gray wire; then
connect the black tester lead to the white/black wire.
3. With the ignition key in the LIGHTS position, the
meter must show battery voltage.
NOTE: If the meter shows no voltage, inspect
fuses, wiring harness, connectors, and switches. If
the meter shows battery voltage, replace the bulb.
VOLTAGE (Brakelight)
NOTE: Perform this test on the main harness side
of the connector. Also, the ignition switch should
be in the ON position and the brake (either foot
pedal or hand lever) must be applied.
NOTE: Make sure the brake lever (front) and
brake pedal (rear) are properly adjusted for this
procedure.
1. Set the meter selector to the D.C. Voltage position.
2. Connect the red tester lead to the black/white wire;
then connect the black tester lead to the white/black
wire.
3. With either brake applied, the meter must show bat-
tery voltage.
NOTE: If the meter shows no voltage, inspect
bulb, fuses, wiring harness, connectors, and
switches. If the meter shows battery voltage,
replace the bulb.

Ignition Timing

The ignition timing cannot be adjusted; however, verify-
ing ignition timing can aid in troubleshooting other com-
ponents. To verify engine timing, use the following
procedure.
1. Attach the engine Timing Light (p/n 0644-197) to the
spark plug high tension lead; then remove the timing
inspection plug from the left-side magneto cover.
2. With the Arctic Cat Engine Tachometer (p/n 0644-
275) connected, start the engine and run at the speci-
fied RPM.
3. Ignition timing should be according to specification.
4. Install the timing inspection plug.
If 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.
13