Arctic Cat 350 2011 Service Manual page 127

For Discount Arctic Cat Parts Call 606-678-9623 or 606-561-4983
THERMOSTAT
Removing
1. Drain approximately one quart of coolant from the
cooling system.
2. Remove the two cap screws securing the thermo-
stat housing to the mounting bracket. Remove the
thermostat housing cover and account for an
O-ring and a thermostat.
Inspecting
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is
necessary.
1. Inspect the thermostat for corrosion or spring dam-
age.
2. Using the following procedure, inspect the ther-
mostat 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).
D. If the thermostat does not open, it must be
replaced.
3. Inspect all coolant hoses, connections, and clamps
for deterioration, cracks, and wear.
NOTE: All coolant hoses and clamps should be
replaced every four years or 4000 miles.
Installing
1. Place the thermostat and O-ring into the thermo-
stat housing; then secure the thermostat housing to
the mounting bracket with the two cap screws.
2. Fill the cooling system to the recommended level
with antifreeze. Check for leakage.
WATER PUMP
NOTE: The water pump is a non-serviceable
component. It must be replaced as an assembly.
Removing
1. Remove the radiator cap; then remove the water
pump drain and drain the coolant.
4-14
www.mymowerparts.com
Manual
Table of Contents
2. Drain the oil from the engine/transmission.
3. Remove the four torx-head cap screws securing
the front and rear fenders to the footrest; then
remove the four cap screws securing the footrest to
the frame. Remove the footrest.
4. Loosen the hose clamps and slide the clamps away
from the hose ends approximately 2 in.; then
remove the hoses from the water pump.
5. Remove the four cap screws securing the water
pump to the engine; then remove the water pump.
Installing
1. Secure the water pump to the engine with the four
cap screws tightened to 8 ft-lb.
2. Connect the coolant hoses to the water pump and
secure with the clamps. Tighten securely.
Section
Table of Contents
FI530A
FI538A
FI538A