Checking The Cooling Liquid Level In The Radiator; Bleeding The Cooling System - KTM 990 SUPER DUKE, 990 SUPER DUKE R Owner's Manual

MAINTENANCE WORK ON CHASSIS AND ENGINE
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Checking the cooling liquid level in the radiator

Hold the radiator cap [1] with a cloth, carefully turn in a counterclockwise direction and
remove. The radiator should be completely filled with cooling liquid; no air should be in the
radiator.
If any cooling liquid is missing, the cooling system is probably leaking. Have the cooling
system checked at an authorized KTM workshop.
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If possible, check the cooling liquid level when the engine is cold. If you need to remove
the radiator cap when the engine is hot, hold the cap with a cloth and open slowly, allow-
ing any excess pressure to escape (danger of scalding).
– Accumulated soil and lime on the radiator cap will cause you to lose cooling liquid. Carefully
clean the radiator cap, gasket [2] and sealing area each time.
– If more than 1 liter of cooling liquid needs to be added, you will need to bleed the cool-
ing system.

Bleeding the cooling system

Take off the left and right spoilers. To take off the spoilers, remove the screws [3] and [4]
on each side.
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