35Iwater Pump, Cooling System; Cooling System; Checking The Anti-Freeze And Coolant Level - KTM 400 EXC AUS 2011 Repair Manual

35IWATER PUMP, COOLING SYSTEM
178
Coolinl ~ m
Water pump
0
in the engine circulates the coolant.
The water cycle through the radiator is controlled on the basis of the coolant temper-
ature. The cooling system is subdivided into two circuits. In the warming-up phase,
the engine circulates the water through the smaller cooling circuit. This warms up the
engine rapidly. Thermostat. warms up and opens the entry to the radiator (large cir-
cuit). In this way, the engine temperature can be kept constant.
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 tem-
perature will not result in a risk of malfunctions.
1120 °C (248
OF)
Cooling is effected by the air stream.
The lower the speed, the less the cooling effect. Oirty cooling fins also reduce the cool-
ing effect.
(EXC SIX DAYS, XC-W SIX DAYS)
The radiator fan provides extra cooling. It is controlled by a thermoswitch.
Chackinl tha anti.fraaza and coolant laval
Warning
Danler 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.
400243-10
Condition
Engine is cold.
- Stand the motorcycle upright on a horizontal surface.
- Remove radiator cap.
- Check the anti-freeze of the coolant.
1-25 ... -45°C (-13 ... -49
oF)
• 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.
I
Coolant level. above radiator fins. 110 mm (0.39 in)
• If the level of the coolant does not meet specifications:
- Correct the coolant level.
Alternative 1
I
Coolant
(oF"
p. 250)
Alternative 2
I
Coolant (mixed ready to use)
( oF"
p. 250)
- Refit the radiator cap.
35IWATER PUMP, COOLING SYSTEM
178
Coolinl ~ m
Water pump
0
in the engine circulates the coolant.
The water cycle through the radiator is controlled on the basis of the coolant temper-
ature. The cooling system is subdivided into two circuits. In the warming-up phase,
the engine circulates the water through the smaller cooling circuit. This warms up the
engine rapidly. Thermostat. warms up and opens the entry to the radiator (large cir-
cuit). In this way, the engine temperature can be kept constant.
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 tem-
perature will not result in a risk of malfunctions.
1120 °C (248
OF)
Cooling is effected by the air stream.
The lower the speed, the less the cooling effect. Oirty cooling fins also reduce the cool-
ing effect.
(EXC SIX DAYS, XC-W SIX DAYS)
The radiator fan provides extra cooling. It is controlled by a thermoswitch.
Chackinl tha anti.fraaza and coolant laval
Warning
Danler 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.
400243-10
Condition
Engine is cold.
- Stand the motorcycle upright on a horizontal surface.
- Remove radiator cap.
- Check the anti-freeze of the coolant.
1-25 ... -45°C (-13 ... -49
oF)
• 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.
I
Coolant level. above radiator fins. 110 mm (0.39 in)
• If the level of the coolant does not meet specifications:
- Correct the coolant level.
Alternative 1
I
Coolant
(oF"
p. 250)
Alternative 2
I
Coolant (mixed ready to use)
( oF"
p. 250)
- Refit the radiator cap.