Cooling System; Checking The Anti-Freeze And Coolant Level; Checking The Coolant Level - KTM 400 EXC EU Owner's Manual

COOLING SYSTEM

Cooling system
14.1

Checking the anti-freeze and coolant level

14.2
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.
–
Avoid contact between coolant and skin, eyes and clothing. If it gets into your eyes, rinse immediately with water and con-
tact a doctor. Wash affected skin areas immediately with soap and water. If coolant is swallowed, contact a doctor immedi-
ately. Change clothes that have come into contact with coolants. Keep coolant out of the reach of children.

Checking the coolant level

14.3
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.
–
Avoid contact between coolant and skin, eyes and clothing. If it gets into your eyes, rinse immediately with water and con-
tact a doctor. Wash affected skin areas immediately with soap and water. If coolant is swallowed, contact a doctor immedi-
ately. Change clothes that have come into contact with coolants. Keep coolant out of the reach of children.
Water pump

The pressure resulting from the warming of the cooling system is regulated by a valve
in radiator cap
perature 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.
(EXC SIX DAYS, XC‑W SIX DAYS)
400335-10
The radiator fan provides extra cooling. It is controlled by a thermoswitch.
Condition
Engine is cold.
–
Stand the motorcycle upright on a horizontal surface.
–
Remove radiator cap.
–
Check the anti-freeze of the coolant.
−25... −45 °C (−13... −49 °F)
» If the anti-freeze of the coolant does not meet specifications:
–
Correct the anti-freeze of the coolant.
–
Check the coolant level in the radiator.
400243-10
Coolant level
» If the level of the coolant does not meet specifications:
–
Correct the coolant level.
Alternative 1
Alternative 2
–
Refit the radiator cap.
in the engine circulates the coolant.
. This ensures that operating the vehicle at the specified coolant tem-

above radiator fins.

Coolant ( p. 113)
Coolant (mixed ready to use) (
10 mm (0.39 in)
p. 113)
84