Ignition Timing; Handlebar Control Switches; Brakelight Switches - Arctic Cat 2016 90 Utility Service Manual

2. Connect the red tester lead to the high tension lead
(plug cap removed); then connect the black tester
lead to either primary lead.
3. The meter must read 2830-3170 ohms.
NOTE: If the meter does not read as specified,

replace the ignition coil.
SPARK PLUG CAP RESISTANCE
1. Connect the red tester lead to one end of the cap;
then connect the black tester lead to the other end of
the cap.
2. The meter must read 4725-5775 ohms.
NOTE: If the meter does not read as specified,

replace the spark plug cap.

Ignition Timing

The ignition timing cannot be adjusted; however, verifying
ignition timing can aid in troubleshooting other components.
To verify ignition timing, use the following procedure.
1. Attach the Timing Light (p/n 0644-296) to the spark
plug high tension lead; then remove the right foot-
well and the right-side fan cover.
2. Using the Tachometer (p/n 0644-275), start the
engine and run at 1800 RPM; ignition timing should
be 13° BTDC ("F" mark).
3. Install the fan cover and right footwell.
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.
Handlebar Control
Switches
The connector is in front of the steering post. The con-
nector is accessible beneath the front fender.
NOTE: These tests should be made on the switch

side of the connector.
CAUTION
Always disconnect the battery when performing resis-
tance tests to avoid damaging the multimeter.
RESISTANCE (Starter Button)
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the yellow/red wire;
then connect the black tester lead to the green wire.
3. With the starter button depressed, the meter must
read less than 1 ohm.
4. With the starter button released, the meter must read
an open circuit.
NOTE: If the meter does not read as specified,

replace the switch/component, connector, or switch
harness.
RESISTANCE (Emergency Stop)
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the blue/yellow wire;
then connect the black tester lead to the green wire.
3. With the switch in the OFF position, the meter must
read an open circuit.
4. With the switch in the RUN position, the meter must
read less than 1 ohm.
NOTE: If the meter reads more than 1 ohm of resis-

tance, troubleshoot or replace the switch/component,
the connector, or the switch wiring harness.

Brakelight Switches

The left brake switch is located under the left front
fender. The right brake switch is located under the right
front fender.
NOTE: The ignition switch must be in the ON posi-

tion.
VOLTAGE (Wiring Harness Connector)
1. Set the meter selector to the DC Voltage position;
then turn the ignition switch to the ON position.
2. Connect the red tester lead to the green/yellow wire;
then connect the black tester lead to a suitable ground.
3. The meter must read battery voltage.
NOTE: If the meter reads no battery voltage, trou-

bleshoot the battery, fuse, switch, or the main wiring
harness.
 NOTE: If the meter reads battery voltage, the main
wiring harness is good; test the switch/component, the
connector, and the switch wiring harness for resis-
tance.
RESISTANCE (Brakelight Switch
Connector)
CAUTION
Always disconnect the battery when performing resis-
tance tests to avoid damaging the multimeter.
 NOTE: The brake lever must be compressed for this
test. Also, the ignition switch must be in the OFF posi-
tion.
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the black wire; then
connect the black tester lead to the green/yellow
wire.
3. When the lever is compressed, the meter must read
less than 1 ohm.
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