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Cooling System Operation

The cooling system is designed to be a "closed" system. This means that any air leaks will lead to reduced cooling capacity.

Why a "closed" system? Because pressurizing a liquid raises it's boiling point past approx 212 Fahrenheit. If the coolant was not under pressure, it would boil off before it could cool the engine.

There are 8 main components in the cooling system (not including the hoses)

Cooling System in Operation

Warm Up

Operating Temperature

Hot Temperature


Cool Down (bike's ignition is off)

Here is a link to an automotive cooling system with a graphic - which is similar to motorcycles: Automotive Cooling System