KTM 2015 RC 390 EU Owner's Manual page 148

16 COOLING SYSTEM
–
Release bleeder screw
–
Tilt the vehicle slightly to the right.
–
Pour in coolant until it emerges without bubbles at the bleeder screw, and then mount
and tighten the bleeder screw immediately.
Coolant (
–
Fill the radiator completely with coolant. Mount the radiator cap.
–
Rest the vehicle on the side stand.
L02265-10
Danger
Danger of poisoning Exhaust gases are toxic and inhaling them may result in
unconsciousness and/or death.
–
–
Start the engine and let it run warm.
–
Stop the engine and allow it to cool down.
–
When the engine is cool, check the coolant level in the radiator and, if necessary, add
coolant.
–
Remove the cap of the compensating tank
up to the MAX mark.
–
Mount the cap of the compensating tank.
M00464-11
Finishing work
–
Fit the front spoiler. (
–
Install the left side cover.
 by three turns.
p. 184)
When running the engine, always make sure there is sufficient ventilation,
and do not start or run the engine in an enclosed space without an effective
exhaust extraction system.
p. 95)
( p. 98)

and add coolant until the coolant level is
146