Brake fluid should be changed once a year, preferably in the spring.
Care must be taken when handling brake fluid.
Suck out the liquid from the tank using a syringe to a level of approximately 10 mm.
Note: Do not suck out all the fluid, as this will introduce air into the brake system.
Fill the tank with fresh liquid up to the "max" mark.
Place a tube on the drain valve of the left rear caliper and place a container half filled with brake fluid underneath it.
Open the drain valve and press the brake pedal 10 times to pump out the old fluid. Make sure that the other end of the tube is always below the surface of the fluid.
Close the drain valve and add fresh brake fluid to the reservoir.
Similarly, pump out the old brake fluid from the remaining calipers.
Caution: The liquid flowing out of the drain valve must be clean and free of air bubbles.