Polaris Outlaw 525 IRS Owner's Manual page 123

Maintenance
Engine Cooling System
Escaping steam can cause severe burns. Never remove the pressure cap while the engine is warm
or hot. Always allow the engine to cool before removing the cap.
Radiator Coolant Level
If the recovery bottle has run dry, inspect the level in the
radiator and add coolant if necessary. The radiator pressure
cap is located on the left side of the vehicle.
1. Remove the pressure cap.
2. Using a funnel, slowly add coolant as necessary
through the radiator filler neck.
3. Reinstall the pressure cap.
NOTE:
Use of a non-standard pressure cap will not allow the recovery system to function properly.
Contact your dealer for the correct replacement part.
120
WARNING
Pressure
Cap