Exhaust System; Engine Cooling - Polaris Frontier Owner's Manual

MAINTENANCE
General Maintenance

Exhaust System

Check the exhaust system for wear or damage at approximately 2000
miles (3200 km). To inspect, allow the engine and exhaust system to
cool completely. Open the hood and inspect the muffler and pipes for
cracks or damage. Check for weak or missing retaining springs or
damper/support grommets.
Hot exhaust system parts can cause serious burns. Allow
adequate time for the exhaust system to cool. Never perform
this procedure with the engine running.

Engine Cooling

The cooling system on liquid cooled models consists of the following
major components:
S Coolant bottle
S Water pump
S Cylinders
S Heads
S Inlet and outlet manifolds
S Pressure cap
S Heat exchangers
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