KTM 125 Duke 2018 Owner's Manual page 146

13 BRAKE SYSTEM
144
Condition
The screw cap is locked.
–
Remove screw
H01142-10
–
Stand the vehicle upright.
–
Remove screw cap
–
Add brake fluid to level
Brake fluid DOT 4 / DOT 5.1 (
–
Mount screw cap with membrane.
Info
Clean up overflowed or spilled brake fluid immediately
F00750-10
with water.
1
and take off the screw cap lock.
2 with membrane 3 .
A
.
p. 234)