KTM 990 SUPER DUKE - Manual (Page 70)

Remove the drain plug [6] on the oil tank and allow the oil to drain into a receptacle. Remove
the screws [7] and tilt the oil return valve [8] to the side.
Carefully pull the oil screen [9] out of the oil tank.
Thoroughly clean the drain plugs, the cover and both oil screens. Clean all rubber seal rings
and check for damage. Replace if necessary.
MAINTENANCE WORK ON CHASSIS AND ENGINE
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