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ENGINE / COOLING SYSTEM
Thermostat Replacement
1. Remove the hood from the front cab.
The cooling system is under pressure and
serious burns may result.
Allow the engine to cool before servicing.
2. Remove the pr essure cap to reliev e any sys tem
pressure (see "Pressure Cap Test").
3. Drain coolant to a level below the thermostat housing.
4. Remove the cargo box access panel.
5. Remove the spark plug wire from the engine.
6. Remove th e (2 ) bo lts (X) retai ning the th ermostat
cover.
7. Lift the co ver from th e en gine a nd r emove the
thermostat.
8. Reverse th is p rocedure for in stallation. Re place
thermostat seal if wor
thermostat cover bolts to specification.
Thermostat Cover Bolts:
7.5 ft. lbs. (10 Nm)
9. Be sure to properly fill and bleed cool ing system as
outlined in this chapter.
3.18
WARNING
X
n or da maged. T orque
= T
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
Cooling System Bleeding Procedure
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.
Use caution when performing these procedures.
Coolant may be hot and may cause
severe injury or burns.
NOTE: If the coolant level is LOW in the radiator, or
if there are leaks in th e system, the coolant system
will not draw coolant from the reservoir tank.
NOTE: It may be necessary to safely raise the front
of the vehicle 1 2" ( 30 c m) to blee d the c ooling
system.
1. Allow engine and cooling system to completely cool.
Be sure the engine has cooled and no pressure
is built up in the co oling system before removing
the pressure cap. The coolant may be hot and
could cause severe injury or burns.
2. Remove the hood.
3. Remove the recovery bottle cap (A) and fill the bottle
to the MAX line.
B
MAX Line
WARNING
CAUTION
CAUTION
A
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