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3.11
ENGINE
3
9923142 - 2011 RANGER RZR / RZR S / RZR 4 Service Manual
© Copyright 2010 Polaris Sales Inc.
ENGINE COOLING SYSTEM
Cooling System Specifications
Recommended Coolant
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.
CAUTION: 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 is recommended for use in
all cooling systems and comes pre-mixed, ready to use.
Cooling System Pressure Test
1. Remove the hood from the front cab.
2. Remove pressure cap and pressure test the cooling system
using a commercially available pressure tester.
3. The system must maintain 10 psi for five minutes or longer.
If pressure loss is evident within five minutes, check the
radiator, hoses, clamps and water pump seals for leakage.
Pressure Cap Test
1. Remove the front hood (see Warning under “Cooling
System Pressure Test”).
2. Remove pressure cap and test using a pressure cap tester
(commercially available).
3. The pressure cap relief pressure is 13 psi. Replace cap if it
does not meet this specification.
Condition Coolant Temperature F (C)
Room Temperature 68F (20C)
Thermostat Closed 175° F (79° C)
Thermostat Open 180° F (82° C)
Fan Off 194F (90C)
Thermostat Full Open Lift 202° F (94° C)
Fan On 205F (96C)
Engine Temperature
Overheat Indicator
Moving Vehicle: 235
F (113
C)
Idle Vehicle: 241F (116C)
Engine Protection
Ignition Misfire
Moving Vehicle: 239
F (115
C)
Idle Vehicle: 244F (118C)
Engine Protection
Shutdown
Moving Vehicle: 257
F (125
C)
Idle Vehicle: 262F (128C)
Item Specification
Cooling System Capacity
RZR / RZR S 4.8 qts. (4.5 l)
RZR 4 5.5 qts. (5.2 l)
Pressure Cap Relief 13 PSI
Polaris Premium Antifreeze
2871534 - Quart
2871323 - Gallon
WARNING
Never remove pressure cap when engine is
warm or hot. The cooling system is under
pressure and serious burns may result.
Allow the engine to cool before servicing.
Remove
Cap
Test Here
Pressure Cap