3.12
9925723 R01 - 2015 RZR 900 Service Manual
© Copyright 2014 Polaris Industries Inc.
ENGINE COOLING SYSTEM
Cooling System Specifications
CONDITION COOLANT TEMP
Thermostat Starts to
Open
180° F (82° C)
Fan Shuts Off 192° F (89° C)
Fan Turns On 198° F (92° C)
Thermostat Fully Open 203° F (95° C)
Engine Temperature
Overheat Indicator
232° F (111° C)
Engine Protection Level 1
– Power Limit
232° F (111° C)
Engine Protection –
Ignition Misfire
237° F (114° C)
Engine Protection Level 2
– Power Limit
244° F (118° C)
Engine Shutdown
Protection
252° F (122° C)
ITEM
SPECIFICATION
Cooling System Capacity 4.9 qts (4.6 L)
Pressure Cap Relief 13 PSI
PolarisAntifreeze
2880514 – Quart
2880513 – Gallon
Cooling System Pressure Test
1. Remove the hood from the front cab.
WARNING
Escaping steam can cause burns. Never remove the
pressure cap while the engine is warm or hot. Always
allow the engine to cool before removing the pressure
cap.
2. Remove the pressure cap from the radiator and
pressure test the cooling system using a
commercially available tester.
3. The system must maintain 10 PSI for five minutes or
longer. If pressure loss is evident within five minutes,
check the radiator, all cooling system hoses, clamps
and water pump seal for signs of leaking.
Radiator Cap Pressure Test
1. Open the front hood.
WARNING
Escaping steam can cause burns. Never remove the
pressure cap while the engine is warm or hot. Always
allow the engine to cool before removing the pressure
cap.
2. Remove radiator pressure cap and test using a
commercially available pressure cap tester.
3. Replace cap if it does not meet the specification.
Radiator Cap Pressure Relief
13 PSI
Radiator Removal / Installation
NOTE: This procedure should also be followed for
radiator fan replacement.
1. Remove the hood and front bumper. (see Chapter 10
– Front Bumper Removal, page 10.12)
2. Remove the four fasteners retaining the front bumper
support to the main frame.
ENGINE / COOLING SYSTEM
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