16 COOLING SYSTEM 154
16.1 Cooling system
S01020-10
Water pump
in the engine ensures forced circulation of the coolant.
The pressure resulting from the warming of the cooling system is regulated by a valve
in radiator cap
. Heat expansion causes excess coolant to flow into compensating
tank
. When the temperature falls, this surplus coolant is sucked back into the cool-
ing system. This ensures that operating the vehicle at the specified coolant temperature
will not result in a risk of malfunctions.
S01021-10
125 °C (257 °F)
Cooling takes place by means of the air stream and a radiator fan, which is controlled by
a thermoswitch.
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.
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