KTM 390 Duke 2016 Owner's Manual page 104

12 BRAKE SYSTEM
Warning
Danger of accidents Reduced braking efficiency due to old brake fluid.
–
Change the brake fluid of the front and rear brake according to the service schedule. (Your authorized KTM workshop will be
glad to help.)
Warning
Environmental hazard Hazardous substances cause environmental damage.
–
Oil, grease, filters, fuel, cleaners, brake fluid, etc., should be disposed of as stipulated in applicable regulations.
Info
Avoid contact between brake fluid and painted parts. Brake fluid attacks paint!
Use only clean brake fluid from a sealed container.
Preparatory work
–
Check the rear brake linings. (
Main work
Condition
The screw cap is locked.
–
Remove screw
H01142-10
p. 103)

and take off the screw cap lock.
102