Snowmobile Arctic Cat (2008 year). Manual - part 87

5

5-29

Troubleshooting 

Electric Start

Ignition Timing

„NOTE: Ignition timing can be checked and/or ver-
ified on all snowmobile engines.

CHECKING (All Models)

1. Connect a timing light to the MAG-side spark plug

lead.

2. Using a shielded safety stand, raise the rear of the

snowmobile off the floor and start the engine.

Gradually increase the engine speed to the speci-

fied RPM; the pointer should align with the proper

timing mark on the flywheel.

3. On the 370 cc if timing is not correct, adjust the

ignition timing.

ADJUSTING (370 cc)

1. Remove the recoil starter, starter pulley, and fly-

wheel.

2. Loosen the two screws securing the stator plate

and rotate the stator plate in the proper direction to

attain correct timing.

„NOTE: Rotate the stator plate clockwise to retard
the timing or counterclockwise to advance the tim-
ing. The stamped marks on the stator plate at the
upper socket-head cap screw mounting hole can
be used for timing.

3. Tighten the screws securing the stator plate.

4. Install the flywheel, starter pulley, and recoil

starter.

5. Recheck timing for accuracy and adjust if neces-

sary.

Brakelight Switch

BEARCAT 570/PANTHER 370

Testing/Removing

1. Disconnect the wiring harness from the brake con-

trol.

2. To test the brakelight switch, connect one tester

lead to the #1 (yellow) terminal; then connect the

other lead to the #4 (red) terminal.

727-650A

3. With the brake lever compressed, the meter must

read resistance. With the brake lever released, the

meter must read no resistance. If the meter does

not read as specified, the brakelight switch is

defective and must be replaced.

4. To remove the switch, use a small screwdriver to

compress the plastic locking tabs by pushing in on

the tabs; then slide the switch free of the brake

control.

AF201D

Problem: Hot or Smoking Wires

Condition

Remedy

1.  System wired incor-

rectly

1. Check wiring against wir-

ing diagram

Problem: Starter Does Not Turn Over

Condition

Remedy

1. Battery discharged

2. Connection loose

3. Grounding improper

4. Fuse blown - not

installed

1. Check/charge the battery

2. Check tightness of all

connections

3. Check round connections

4. Check - replace fuse

5-30

AF907D

Installing

1 Slide the brakelight switch into the brake control

assembly until the self-locking tabs snap into posi-

tion. Give the switch body a light pull to make

sure the switch is properly secured.

2. Connect the switch harness to the main wiring har-

ness. Position the wires so they will not be either

pinched or come in contact with any moving com-

ponents. Start the engine and check the switch for

proper operation.

EFI MODELS/F 570/T570

Testing/Removing

„NOTE: On the F-Series/T-Series to access the
brakelight switch connector, the two rear console
torx-head screws must be removed and the con-
sole must be lifted upward and forward.

1. Disconnect the brakelight switch black and brown

two-wire connector (located below the steering

support). 

2. To test the brakelight switch, connect one tester

lead to the brown terminal; then connect the other

lead to the black terminal.

3. With the brake lever compressed, the meter must

read 1 ohm or less resistance. With the brake lever

released, the meter must read OL (open). If the

meter does not read as specified, the brakelight

switch is defective and must be replaced.

4. To remove the switch, remove the snap ring; then

remove the pin securing the brake lever to the con-

trol assembly.

5. Using a small flat-blade screwdriver, compress the

tabs of the switch; then push the switch toward the

end of the handlebar and out of the control assem-

bly.

CM108A

Installing

1. Slide the brakelight switch into the brake control

assembly until the self-locking tabs snap into posi-

tion. Give the switch body a light pull to make

sure the switch is properly secured.

2. Install the brake lever and secure with the pin and

snap ring.

3. Connect the switch harness to the main wiring har-

ness. Position the wires so they will not be either

pinched or come in contact with any moving com-

ponents. Start the engine and check the switch for

proper operation.

„NOTE: On the F-Series/T-Series, return the con-
sole to position and secure with the two rear torx-
head screws.

Headlight

Dimmer Switch

BEARCAT 570/PANTHER 370

Testing

1. Disconnect the headlight dimmer switch plug

(located next to the air-intake silencer).

2. Use the tester connections indicated in the follow-

ing chart. If the meter does not read as specified,

the headlight dimmer switch is defective and must

be replaced.

Position

Lead to 

Terminal 

(Wire Color)

Lead to 

Terminal 

(Wire Color)

Meter Reading

High Beam

1 (Yellow)

2 (Blue)

Less than 1 ohm

High Beam

1 (Yellow)

3 (White)

OL

Low Beam

1 (Yellow)

2 (Blue)

OL

Low Beam

1 (Yellow)

3 (White)

Less than 1 ohm

5

5-31

Removing

1. Remove the handlebar pad.

2. Remove the screws from the cover plate securing

the dimmer switch.

AF908D

3. Remove the plate and lift the switch free of the

control.

AF909D

Installing

1. Place the dimmer switch into the control and

secure with the cover plate and screws.

2. Connect the four-prong plug; then install and

secure the handlebar pad.

EFI MODELS/F 570/T570

Removing/Testing

1. Remove the handlebar pad (if applicable).

2. Remove the four screws securing the left-side han-

dlebar control assembly; then remove the control

assembly from the handlebar.

3. Disconnect the HI/LO beam harness from the

switch.

4. With the switch in the LO beam position, connect

one ohmmeter lead to pin (A) and the other ohm-

meter lead to pin (C). The meter must read 1 ohm

or less resistance.

CM109A

5. With the switch in the HI beam position, connect

one ohmmeter lead to pin (B) and the other ohm-

meter lead to pin (C). The meter must read 1 ohm

or less resistance.

„NOTE: If either test does not read within specifi-
cation, replace the complete control assembly.

Installing

1. Connect the HI/LO beam harness to the switch;

then place the control assembly on the handlebar.

2. Secure with the four screws.

3. Install the handlebar pad (if applicable).

Testing Handlebar 

Warmer Elements

„NOTE: During this test, resistance will vary due
to temperature; therefore, this test should be made
at room temperature of 20° C (68° F).

BEARCAT 570/PANTHER 370

1. Remove the handlebar pad; then disconnect the

handlebar warmer two-wire connector.

2. In the element connector, connect the ohmmeter

between the two lead wires.

3. The meter must read between 7.2 and 8.8 ohms.

4. Replace any element measuring less than or more

than the specified amount.

„NOTE: Repeat test for the other element.

5. Connect the leads; then install and secure the han-

dlebar pad.

EFI MODELS/F 570/T570

„NOTE: To access the element connectors, the
handlebar control assembly for the side being
tested must be removed.

5-32

1. Remove the handlebar pad (if applicable); then

disconnect the handlebar warmer three-wire con-

nector.

2. In the element connector, connect one ohmmeter

lead to the green/white lead; then connect the other

ohmmeter lead to the green lead.

3. The meter must read between 6.3-7.7 ohms.

4. In the element connector, connect the ohmmeter

between the green/blue and green lead wires.

5. The meter must read between 12.6 and 15.4 ohms.

6. Replace any element measuring less than or more

than the specified amount.

„NOTE: Repeat test for the other element.

7. Connect the leads; then install the handlebar con-

trol assembly and secure the handlebar pad (if

applicable).

Testing Thumb Warmer 

Element

„NOTE: During this test, resistance will vary due
to temperature; therefore, this test should be made
at room temperature of 20° C (68° F).

BEARCAT 570/PANTHER 370

1. Remove the handlebar pad; then disconnect the

thumb warmer two-wire connector.

2. In the element connector, connect one ohmmeter

lead to the green/white lead; then connect the other

ohmmeter lead to the yellow lead.

3. The meter must read between 2.7 and 3.3 ohms.

„NOTE: If the test is not within specification,
replace the thumb warmer element.

4. Connect the leads; then install and secure the han-

dlebar pad.

EFI MODELS/F 570/T570

1. Remove the handlebar pad (if applicable); then

disconnect the thumb warmer three-wire connec-

tor.

2. In the element connector, connect one ohmmeter

lead to the green/white lead; then connect the other

ohmmeter lead to the green lead.

3. The meter must read between 1.5 and 6.9 ohms.

4. In the element connector, connect one ohmmeter

lead to the green/blue lead; then connect the other

ohmmeter lead to the green lead.

5. The meter must read between 5.5 and 23.0 ohms.

„NOTE: If either test is not within specification,
replace the thumb warmer element.

6. Connect the leads; then install and secure the han-

dlebar pad (if applicable).

Testing Handlebar

Warmer Switch

(Bearcat 570/Panther 370)

1. Remove the handlebar pad.

2. Disconnect the handlebar warmer two-wire con-

nector.

3. In the switch connector, connect the ohmmeter

leads to each terminal.

4. With the switch in the OFF position, the meter

must read an open circuit. With the switch in the

ON position, the meter must read 1 ohm or less

resistance.

5. Connect the leads; then install and secure the han-

dlebar pad.

Testing Handlebar 

Warmer/Thumb

Warmer Switch 

(EFI Models/F 570/T570)

REMOVING/TESTING

1. Remove the handlebar pad.

2. Remove the four screws securing the left-side han-

dlebar control assembly; then remove the control

assembly from the handlebar.

3. Disconnect the handlebar/thumb warmer harness

from the switch.

4. With the thumb warmer toggle in the low position,

connect one ohmmeter lead to pin (C) and the

other ohmmeter lead to pin (B). The meter must

read 1 ohm or less resistance.