Thermostat Replacement; Cooling System Bleeding Procedure - Polaris RANGER ETX 2015 Owner's Manual

ENGINE / COOLING SYSTEM

THERMOSTAT REPLACEMENT

1. Open the hood.
WARNING
Allow the engine to cool before servicing. The cooling
system is under pressure and serious burns may result.
2. Remove the pressure cap to relieve any system
pressure (see "Pressure Cap Test").
3. Drain coolant to a level below the thermostat
housing.
4. Tilt the cargo box.
5. Remove the two bolts
cover.
6. Lift the cover from the engine and remove the
thermostat.
7. Reverse this procedure for installation. Replace
thermostat seal if worn or damaged. Torque
thermostat cover bolts to specification.
TORQUE
Thermostat Cover Bolts:
8 ft-lbs (11 Nm)
8. Be sure to properly fill and bleed cooling system as
outlined in this chapter.
3.106
q
retaining the thermostat
9926806 R03 - 2015 - 2016 RANGER ETX / 570 2-SEAT 2015 - 2016 RANGER 570 CREW Service Manual
COOLING SYSTEM BLEEDING
PROCEDURE
WARNING
Always wear safety glasses and proper shop clothing
when performing the procedures in this manual. Failing
to do so may lead to possible injury or death.
CAUTION
Use caution when performing these procedures.
Coolant may be hot and may cause severe injury or
If the coolant level is LOW in the radiator, or if there are
leaks in the system, the coolant system will not draw
coolant from the reservoir tank. It may be necessary to
safely raise the front of the vehicle 12" (30 cm) to bleed
the cooling system.
1. Allow engine and cooling system to completely cool.
CAUTION
Be sure the engine has cooled and no pressure is built
up in the cooling system before removing the pressure
cap. The coolant may be hot and could cause severe
injury or burns.
2. Open the hood.
3. Remove the recovery bottle cap (Item 1) and fill the
bottle to the MAX line.
4. Remove the pressure cap (Item 2) and add the
necessary amount of Polaris Premium Antifreeze to
the radiator filler neck.
5. Remove the cargo box access cover to gain access
to the coolant bleed screw that is on top of the
thermostat housing.
burns.
NOTE
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