KTM RC 390 2019 Owner's Manual page 210

17 COOLING SYSTEM
208
Main work
–
Remove radiator cap
V00144-10
–
Loosen bleeder screw
Guideline
3 turns
–
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 immedi-
ately.
Coolant (
V00145-10
–
Completely fill the radiator with coolant. Mount the radiator
cap.
–
Rest the vehicle on the side stand.
1
.
2
.
p. 255)