16 COOLING SYSTEM 101
16.1 Cooling system
H01700-10
The water pump
in the engine circulates the coolant.
The pressure resulting from the warming of the cooling system is regulated by a valve
in radiator cap
. This ensures that operating the vehicle at the specified coolant
temperature will not result in a risk of malfunctions.
120 °C (248 °F)
Cooling is effected by the air stream.
The lower the speed, the less the cooling effect. Dirty cooling fins also reduce the cool-
ing effect.
The radiator fan provides extra cooling. It is controlled by a thermoswitch.
16.2 Checking the antifreeze and coolant level
Warning
Danger of scalding During motorcycle operation, the coolant gets very hot and is under pressure.
– Do not open the radiator, the radiator hoses or other cooling system components if the engine or the cooling system are at
operating temperature.
– Allow the cooling system and the engine to cool down before you open the radiator, the radiator hoses or other components
of the cooling system.
– In the event of scalding, rinse the area affected immediately with lukewarm water.
Warning
Danger of poisoning Coolant is toxic and a health hazard.
– Keep coolant out of the reach of children.
– Do not allow coolant to come into contact with the skin, the eyes and clothing.
– Consult a doctor immediately if coolant is swallowed.
– Rinse the affected area immediately with plenty of water in the event of contact with the skin.
– Rinse eyes thoroughly with water and consult a doctor immediately if coolant gets into the eyes.
– Change clothing if coolant spills onto your clothing.
Condition
The engine is cold.
400243-10
– Stand the motorcycle upright on a horizontal surface.
– Remove the radiator cap.
– Check the antifreeze in the coolant.
−25… −45 °C (−13… −49 °F)
» If the antifreeze in the coolant does not match the specified value:
– Correct the antifreeze in the coolant.
– Check the coolant level in the radiator.
Coolant level
above the radiator
fins
10 mm (0.39 in)
» If the coolant level does not match the specified value:
– Correct the coolant level.
Coolant ( p. 124)
– Mount the radiator cap.
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