Cooling System Specifications; Cooling System Pressure Test; Pressure Cap Test; Radiator Inspection - Polaris ACE 900 2017 Service Manual

COOLING SYSTEM SPECIFICATIONS

Recommended Coolant
Polaris Extended Life Antifreeze:
2880514 – Quart
2880513 – Gallon
Use only high quality antifreeze/coolant mixed with
distilled water in a 50/50 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 Extended Life 50/50 Antifreeze/
Coolant is recommended for use in all cooling systems.
COOLING SYSTEM CAPACITY
ITEM
Cooling System Capacity
Pressure Cap Relief
TEMPERATURE SPECIFICATIONS
CONDITION
Thermostat Starts to
Open
Fan Shuts Off
Fan Turns On
Thermostat Fully Open
Engine Temperature
Overheat Indicator
Engine Protection Level 1
– Power Limit
Engine Protection –
Ignition Misfire
Engine Protection Level 2
– Power Limit
Engine Shutdown
Protection
9929422 R02 - 2017-2019 ACE 900 Service Manual
© Copyright Polaris Industries Inc.

COOLING SYSTEM PRESSURE TEST

1. Open rack and remove the access panel.
2. Remove pressure cap and pressure test the cooling
hot. The cooling system is under pressure and serious
3. The system must maintain 10 psi for five minutes or

PRESSURE CAP TEST

SPECIFICATION
1. Open the front rack and remove the access panel.
3.0 Qts (2.8 L)
2. Remove the pressure cap (see "WARNING" under
13 PSI
COOLANT TEMP
hot. The cooling system is under pressure and serious
180° F (82° C)
194° F (90° C)
3. The pressure cap relief pressure is 13 psi. Replace
205° F (96° C)
203° F (95° C)

RADIATOR INSPECTION

232° F (111° C)
1. Check radiator air passages for restrictions or
232° F (111° C)
2. Carefully straighten any bent radiator fins.
237° F (114° C)
3. Remove any obstructions with compressed air or low
244° F (118° C)
252° F (122° C) Washing the vehicle with a high-pressure washer could
ENGINE / COOLING SYSTEM
system using a commercially available pressure
tester.
WARNING
Never remove pressure cap when engine is warm or
burns may result. Allow the engine to cool before
servicing.
longer. If pressure loss is evident within five minutes,
check the filler neck, radiator, hoses, clamps and
water pump weep hole for leakage.
"Cooling System Pressure Test") and test using a cap
pressure tester (commercially available).
WARNING
Never remove pressure cap when engine is warm or
burns may result. Allow the engine to cool before
servicing.
the cap if it does not meet this specification.
damage.
pressure water.
CAUTION
damage the radiator fins and impair the radiators
effectiveness. Use of a high-pressure washer is not
recommended.
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