Changing the fluid in the front brake circuit
Warning
Brake fluid is corrosive and will damage paint. Avoid contact with eyes and skin. In case of accidental contact, wash thoroughly with water.
Remove cover (1) with the membrane from the front brake fluid reservoir (2) by loosening screws (3).
Siphon off the fluid from the reservoir (2).
Replace the membrane (without the plug) on the reservoir to avoid brake fluid splashes during the following operations.
Move the brake callipers pistons back: to carry out this operation unscrew the fixing screws (4) of the callipers on the fork plates and push, by removing them from each other, both pads from every calliper; during this operation pay attention to the fluid level: fluid must always be sucked when it flows back in the reservoir.
Once that all pistons of both callipers are fully moved back and that all the fluid in the tank has been aspirated, connect to the bleed valve (5) a transparent tube by immersing the end in a container placed on the floor.
Fill the reservoir (2) with new fluid until covering the sight glass (A).
Operate the lever to reach the 20 - 30 mm end of stroke and keep the lever in this position by using a non-elastic clamp.
Loosen the bleed valve of the left calliper (from the rider view) (5) and then take the lever through the whole stroke to allow fluid to flow out.
The lever is supported to the grip.
Tighten the bleed valve (5) to a torque of 10 Nm ±10% and release the lever.
Repeat the operation described above until the old fluid flows completely.
Then, with the bleed valve definitely closed to the specified torque actuate repeatedly the lever until a pressure is detected in the brake system.
Warning
After eliminating the old fluid from the reservoir, during the refilling operation always keep the fluid level above the MIN mark to prevent the formation of air bubbles inside the circuit.
Note
With this procedure, the front calliper remain filled with fluid; if the front callipers must be drained as well, the pistons must be moved back while keeping the bleeding tool (if available) on and connected to the bleed valve.
Fill tank (2) with specified oil taken from an intact container.
Important
During the whole operation, the fluid level that can be seen through the reservoir sight glass must remain topped up at all times. The end of the transparent plastic tubing must remain immersed in the discharged fluid at all times.
Keep the brake lever pulled during the whole filling operation.
Connect bleed valve (5) of front LH calliper.
Note
Follow the manufacturer's instructions when using a commercial tool to bleed the braking system.
Suck with the bleeder and open the bleed valve (5) making sure that the relevant reservoir level does not fall below the sight glass.
Carry on for the time necessary to bleed all air from the system.
Close the bleed valve (5) to a torque of 4 Nm ±10%.
If you do not have a bleeding tool available, connect a transparent plastic tubing to the bleed valve (5) as outlined in the draining procedure.
Pull the lever half way or until you feel system pressure, open bleed valve (5) and pull lever all the way; tighten bleed valve to the specified torque and release lever.
Important
Do not release the brake lever until the bleed valve has been fully tightened.
Repeat the bleeding operation until the fluid in the system is free of air bubbles. To obtain this, after filling, carry out bleeding operation working on the two bleed valves (5) of the front brake callipers.
Then make sure that, with closed bleed valves, pressure actuation by lever or pedal is correct.
Close bleed valves (5) to a torque of 4 Nm ±10% and fit the protection caps.
Level fluid and refit cover (1), tighten screws (3) on reservoir (2).