16 COOLING SYSTEM 102
16.1 Cooling system
102294-10
(All 125/200 models)
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
cooling effect.
B02168-10
(All 250/300 models)
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
cooling effect.
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 remove the radiator cap, radiator hoses or other cooling system components when the engine is hot. Allow the
engine and cooling system to cool down. In case of scalding, rinse immediately with lukewarm water.
Warning
Danger of poisoning Coolant is poisonous and a health hazard.
– Coolant must not come into contact with the skin, eyes, or clothing. If contact occurs with the eyes, rinse with water imme-
diately and contact a physician. Immediately clean contaminated areas on the skin with soap and water. If fuel is swal-
lowed, contact a physician immediately. Change clothing that is contaminated with coolant. Keep coolant out of reach of
children.
Condition
The engine is cold.
400243-10
– Stand the motorcycle upright on a horizontal surface.
– Remove the radiator cap.
– Check the coolant antifreeze.
−25… −45 °C (−13… −49 °F)
» If the antifreeze in the coolant does not match the specified value:
– Correct the coolant antifreeze.
– 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. 141)
– Mount the radiator cap.
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