Checking The Cooling Liquid Level In The Radiator; Bleeding The Cooling System - KTM 990 SUPER DUKE 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, ALLOWING 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 COOLING 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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