4-9
4
Liquid Cooling System
When filling the cooling system, use premixed Arctic Cat
Antifreeze. While the cooling system is being filled, air
pockets may develop; therefore, run the engine for five
minutes after the initial fill, shut the engine off, and then
fill the cooling system to the bottom of the stand pipe in
the radiator neck.
RADIATOR
Removing
1. Drain the coolant at the engine.
2. Remove the front rack (see Section 8).
3. Remove the front bumper and front fender panel (see
Section 8).
4. Remove the upper and lower coolant hoses.
5. Remove the cap screws and nuts securing the radia-
tor to the frame.
6. Disconnect the fan wiring from the main wiring har-
ness; then remove the radiator/fan assembly and
account for the grommets and collars.
7. Remove the fan/fan shroud assembly from the radia-
tor.
CC863
Cleaning and Inspecting
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is nec-
essary.
1. Flush the radiator with water to remove any contami-
nants.
2. Inspect the radiator for leaks and damage.
3. Inspect all hoses for cracks and deterioration.
4. Inspect all fasteners and grommets for damage or
wear.
Installing
1. Position the fan/fan shroud assembly on the radiator;
then secure with existing hardware.
2. Place the radiator with grommets and collars into
position on the frame; then install the cap screws and
nuts. Tighten securely.
3. Install the upper and lower coolant hoses; then
secure with hose clamps.
AF734D
4. Install the front bumper and front fender panel (see
Section 8).
5. Install the front rack (see Section 8).
6. Fill the cooling system with the recommended
amount of antifreeze. Check for leakage.
7. Connect the fan wiring to the main wiring harness.
THERMOSTAT
Removing
1. Drain approximately one quart of coolant from the
cooling system.
2. Remove the two cap screws securing the thermostat
housing to the cylinder head. Account for an O-ring
and a thermostat.
Inspecting
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is nec-
essary.
1. Inspect the thermostat for corrosion or spring dam-
age.
2. Using the following procedure, inspect the thermo-
stat for proper operation.
A. Suspend the thermostat in a container filled with
water.
B. Heat the water and monitor the temperature
with a thermometer.
C. The thermostat should start to open at 71-86° C
(160-187° F).
CAUTION
After operating the ATV for the initial 5-10 minutes, stop
the engine, allow the engine to cool down, and check
the coolant level. Add coolant as necessary.
FOR ARCTIC CAT ATV DISCOUNT PARTS CALL 606-678-9623 OR 606-561-4983
www.mymowerparts.com