Polaris Outlaw Owner's Manual page 118

Engine Cooling System
WARNING
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
This procedure is required only if the cooling system has been
drained for maintenance and/or repair. However, 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.
MAINTENANCE AND LUBRICATION
115