3.16
ENGINE / COOLING
9924096 - 2013 RANGER RZR XP 900 / RZR XP 4 900 Service Manual
© Copyright 2012 Polaris Sales Inc.
Thermostat Replacement
1. Remove the hood from the front cab.
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. Remove upper coolant hose from thermostat housing
(A).
5. Remove the rear bolt (B) retaining the thermostat
cover.
6. Remove the cargo box access panel.
7. Using an 8 mm swivel socket and long extension,
remove the front bolt (C) retaining the thermostat
cover.
8. Lift the cover from the housing and remove the
thermostat.
NOTE: Thermostat has a pop-off relief to allow the
bypass system to operate until thermostat opens.
9. Install a new thermostat with the bleed hole (D)
positioned closest to the engine.
NOTE: Image shown above is with engine removed
for clarity.
10. Reverse this procedure for installation. Torque
thermostat cover bolts to specification.
11. Be sure to properly fill and bleed cooling system as
outlined in this chapter.
The cooling system is under pressure and
serious burns may result.
Allow the engine to cool before servicing.
Thermostat Cover Bolts:
89 ± 9 in-lbs (10 ± 1 Nm)
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