Honda CBR650 - Service manual > Cooling system
Engine/drive train electrical / Cooling system
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Honda CBR650 - Service manual > Secondary air supply system
SYSTEM INSPECTION Start the engine and warm it up to normal operating temperature. Stop the engine. Lift the fuel tank and support it. Disconnect the air supply hose [1] from the air cleaner housing.
Honda CBR650 - Service manual > Service information
GENERAL WARNING Removing the radiator cap while the engine is hot can allow the coolant to spray out, seriously scalding you. Always let the engine and radiator cool down before removing the radiator cap.