Arctic Cat 650 Twin2004, Service Manual

Page: 118 / 210

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5
4. With the dimmer switch in the HI position, test the
two inside connectors (HI beam). The meter must
show battery voltage.

NOTE: If battery voltage is not shown in any test,
inspect the fuses, battery, main wiring harness,
connectors, or the left handlebar switch.
Taillight - Brakelight
The connector is the 3-prong one located under the
rear fender assembly.
BULB VERIFICATION

NOTE: Perform this test on the taillight-brake-
light side of the connector. Also, a 12-volt external
power supply (jumper) will be needed.
1. Connect the power supply (positive) to the yellow
wire; then connect the power supply (negative) to
the brown wire.
2. The taillight should illuminate.
3. With the negative power supply still connected,
connect the positive supply wire to the red wire.
4. The brakelight should illuminate.

NOTE: If either the taillight or brakelight fails to
illuminate, inspect the bulb, the connectors, or the
component wiring harness.
VOLTAGE (Taillight)

NOTE: Perform this test on the main 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 pink wire; then
connect the black tester lead to the 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.
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 (hand) and
brake pedal (auxiliary) 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 red/blue wire;
then connect the black tester lead to the black
wire.
3. With either brake applied, the meter must show
battery voltage.

NOTE: If the meter shows no voltage, inspect
bulb, fuses, wiring harness, connectors, and
switches.
Ignition Timing
The ignition timing cannot be adjusted; however, veri-
fying ignition timing can aid in troubleshooting other
components. To verify ignition timing, use the follow-
ing procedure.
1. Attach the engine Timing Light (p/n 0644-197) to
the front spark plug high tension lead; then remove
the timing inspection plug from the left-side
crankcase cover.
2. With the Arctic Cat Engine Tachometer (p/n
0644-275) connected, start the engine and run at
the specified RPM.
3. Ignition timing should be according to the
following chart and illustration.
ATV2119A
! WARNING
Oil will spray out of the timing inspection hole when
the engine is running. Cover or shield the ATV
around the inspection plug. Always wear protective
glasses when doing timing checks.
Engine Speed
r/min (RPM)
Slot (B) Aligned With
1100 and below
Advanced mark (C) on
alternator rotor
5000 and above
Advanced mark (D) on
alternator rotor