KTM 450 EXC USA Motorcycle User Manual


 
MAINTENANCE WORK ON CHASSIS AND ENGINE 73
800019-11
Mount the fuel tank vent hose.
Mount and tighten screw with the collar sleeve.
Guideline
Remaining screws, chassis M6 10 Nm (7.4 lbf ft)
Position the horn with the horn bracket.
500157-11
Mount and tighten screws with the collar sleeve.
Guideline
Remaining screws, chassis M6 10 Nm (7.4 lbf ft)
Connect the fuel hose.
Mount the seat. ( p. 71)
9.82Cooling system
400335-10
The water pump 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 . This ensures that operating the vehicle at the specified coolant
temperature 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.
9.83Checking the anti-freeze and coolant level
Warning
Danger of scaldingDuring 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 poisoningCoolant 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.
Condition
Engine is cold.
400243-10
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.
Coolant level above radiator fins. 10 mm (0.39 in)
» If the level of the coolant does not meet specifications: