Headlights; Stator Coil; Regulator/Rectifier; Timing Sensor - Arctic Cat 2016 90 Utility Service Manual

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.

Headlights

The two-pin white connectors are located under the front
fender assembly.
BULB VERIFICATION
Visually inspect the bulb for broken filaments, blacken-
ing, or loose bulb base.
VOLTAGE
NOTE: Perform this test on the main harness side of

the connectors. The engine must be running for this
test.
1. Set the meter to the AC Voltage position.
2. Connect the black tester lead to one side of the con-
nector and the red tester lead to the other side.
3. With the engine running, the meter must show 9.0-
13.5 AC volts.
 NOTE: If the meter shows no voltage, inspect wir-
ing harness or connectors. If normal, perform a stator
coil test.

Stator Coil

Disconnect the three-wire connector in front of the steer-
ing post; then insert a jumper wire to connect the timing
sensor to the harness (blue/yellow wire).
VOLTAGE (No Load)
1. Set the meter selector to the AC Voltage position.
2. Connect the red tester lead to the yellow wire; then
connect the black tester lead to the white wire.
3. With the transmission in neutral, start the engine and
run at 3000 RPM or to the RPM limiter. The meter
must read 13.5-16.5 AC volts.
RESISTANCE
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the yellow wire; then
connect the black tester lead to the white wire.
3. The meter must read less than 1 ohm.

Regulator/Rectifier

The regulator/rectifier is located near the front left top
shock mount.
VOLTAGE
1. Set the meter selector to the DC Voltage position.
64
2. Connect the red tester lead to the red wire and the
black tester lead to the green wire (with the regula-
tor/rectifier plugged in).
3. With the engine running at a constant 3000 RPM, the
meter must read 12.1-15.2 DC volts.

Timing Sensor

Disconnect the three-wire connector next to the steering
post.
RESISTANCE
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 a suitable
ground.
3. The meter must read 80-160 ohms.

Starter Motor

NOTE: The starter motor is not a serviceable com-

ponent. If the motor is defective, it must be replaced.
REMOVING
1. Disconnect the battery.
CAUTION
Always disconnect the negative battery cable from the
battery first; then disconnect the positive cable.
2. Remove the starter motor from the engine (see
Engine/Transmission).
3. Remove the nut securing the positive cable to the
starter; then remove the cable from the starter.
Account for an O-ring.
INSTALLING
Install the starter motor (see Engine/Transmission).

Choke Circuit

Disconnect the white two-pin connector adjacent to the
steering post.
VOLTAGE
NOTE: The battery must be at full charge for this

test.
1. Set the meter selector to the AC Voltage position.
2. Connect the red tester lead to the yellow wire; then
connect the black tester lead to the green/black wire.
3. Crank the engine over using the electric starter. The
meter must read 3.5-4.5 AC volts.