Polaris Outlaw 500, Service Manual

Page: 54 / 202

3.7
ENGINE
3
Coolant Temperature Sensor (Thermistor)
Cooling System
Radiator Cap / System Pressure Test
1. Remove recovery bottle hose from coolant filler neck.
2. Connect a Mity Vac™ ( PN 2870975 ) to radiator and
pressurize system to 10 PSI . The system must retain 10 lbs
of pressure for five minutes or longer. If pressure loss is
evident within five minutes, check radiator, all cooling
system hoses and clamps, or water pump seal.
Radiator Cap Pressure Test
1. Remove radiator cap and test using a cap tester
(commercially available).
2. The radiator cap relief pressure is 13 psi. for all models.
Replace if cap releases at less than 13 psi.
Cooling System Specifications
Recommended Coolant Type
Use only high quality antifreeze/coolant mixed with distilled
water in a 50/50 or 60/40 ratio, depending on freeze protection
required in your area.
IMPORTANT: Using tap water in the cooling system
will lead to a buildup of deposits which may restrict
coolant flow and reduce heat dissipation, resulting in
possible engine damage. Polaris Premium 60/40
Antifreeze / Coolant (PN 2871323) is recommended for
use in all cooling systems and comes pre–mixed,
ready to use.
WARNING
Never remove radiator cap when engine is
warm or hot. The cooling system is under
pressure and serious burns may result.
Allow the engine and cooling system to cool
before servicing.
8-12 in. lbs.
(.9-1.3 Nm)
Radiator
Water Pump
Cylinder
Cylinder
Thermostat
FLOW
Head
Description Temperature
Fan Switch (Off)
Fan Switch (On)
150
o
F (65
o
C) ± 8
o
180
o
F (82
o
C) ± 7
o
Hot Light On
221
o
F (105
o
C)
System Capacity 2.25 Quarts (2.1 L)
Radiator Cap Relief
Pressure
13 PSI
Coolant Flow Diagram
From Thermostat Sensor
To Water Pump
Pressure test
here with cap
in place