KTM Supermoto 690 - Manual (Page 108)

MAINTENANCE WORK ON CHASSIS AND ENGINE
106
Cooling system
100166-10
The water pump b in the engine forces the coolant to flow.
The pressure resulting from the warming of the cooling system is regulated by a valve in
the radiator cap
b . Heat expansion causes excess coolant to flow into the compensating
tank b . If the temperature falls, the excess coolant is sucked back into the cooling system.
The specified coolant temperature is therefore permissible without danger of function prob-
lems.
125 b°C (257b°F)
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The coolant is cooled by the air stream and a radiator fan b , which is controlled by a ther-
moswitch.
The lower the speed, the less the cooling effect. Dirty cooling fins also reduce the cooling
effect.
Checking antifreeze and coolant level
Warning
Danger of scalding ಘThe coolant gets very hot when the motorcycle is driven and is under high pressure.
ದ Do not open the radiator, radiator hoses or other cooling system components when the engine is hot. Allow the engine and cool-
ing system to cool down. If you scald yourself, hold the affected area under cold water immediately.