You will need:
- clean rags
- brake fluid ("Tom" or "Rosa")
- rubber or transparent hose
- transparent vessel
- key "8"
Replacement frequency: Every 45,000 km or after 3 years of operation.
Attention! Brake fluid is hygroscopic (absorbs moisture from the surrounding air), therefore it cannot be stored in an open container.
Warning! Take precautions when working with brake fluid: it is toxic. Do not allow brake fluid to come into contact with wires, plastic or painted body parts, so always place clean rags underneath when pouring. If fluid gets on these parts, wipe them off immediately.
Caution! If the rear wheels are suspended, first unlock the rear brake pressure regulator by inserting a bolt or screwdriver of a suitable diameter between the plate and the ball. Do not forget to remove the bolt (screwdriver) after work.
1. Unscrew the reservoir cap and place it on a clean cloth. Be careful: brake fluid may drip from the float.
2. Remove the rubber protective cap from the air bleed valve on the right rear brake mechanism and place a hose on the valve, lowering its end into a transparent container.
3. Turn the valve one turn; the assistant should press the brake pedal all the way down and hold it. Make sure that there is a minimum amount of fluid left in the reservoir and add new fluid if necessary. When the fluid stops flowing from the hose, close the valve.
4. The assistant should release the pedal and press it all the way again, holding the pedal. Unscrew the valve again by one turn. Repeat these operations until clean brake fluid starts to flow out of the hose. Screw the valve back on and put the protective cap on it.
5. In the same way, drain the brake fluid from the left front, left rear and right front brake mechanism.
6. Check for air in the brake system by pressing the brake pedal several times. The pedal travel and force should be constant with each press. If this is not the case, bleed the brake system (see subsection 3.22.).
7. Add brake fluid to the reservoir up to the "MAX" mark and tighten the cap.