Cooling System; Checking The Antifreeze And Coolant Level - KTM 690 SMC Owner's Manual

MAINTENANCE WORK ON CHASSIS AND ENGINE

Cooling system

9.70

Checking the antifreeze and coolant level

9.71
Warning
Scalding hazard During motorcycle operation, the coolant gets very hot and is under pressure.
–
Do not open the radiator, the radiator hoses or other components of the cooling system when the engine is hot. Allow the engine
and radiator to cool down. If you are scalded, hold the affected part under cold water immediately.
The water pump
The pressure resulting from the warming of the cooling system is regulated by a valve in
the radiator cap
tank . 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 °C (257 °F)
600630-10
The coolant is cooled by the air stream and a radiator fan
moswitch.
The lower the speed, the less the cooling effect. Dirty cooling fins also reduce the cooling
effect.
400407-10
in the engine forces the coolant to flow.

. Heat expansion causes excess coolant to flow into the compensating

, which is controlled by a ther-

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