Bold reference numbers in this section identify parts not shown in the figures alongside the text, but which can be found in the exploded view diagram.

The brake master cylinder manufacturer advises against servicing the brake master cylinder due to the safety critical nature of this component.

For the ABS front braking system, also refer to Sect. 7 - 5, ABS system operating information, Sect. 7 - 6, System components, Sect. 7 - 7, ABS components maintenance.

Disconnect the rear stop switch (5) from the main wiring (Sect. 6 - 1, Routing of wiring on frame).

Remove the brake lever (6) and collect the pin (9), the washer (3), the bush (10) and the O-ring (11).

Undo the special screw (22) from the pump (16) and remove the pipe grommet (17); slide the pipe (7) recovering the gaskets (23) and the pipe (21).

To disassemble the master cylinder's outer parts, follow the indications given in the exploded view at the beginning of this Sec­tion.

If the bush (10) inside the brake pedal (6) needs to be replaced, grease the external surface and fit the new bush using a press to insert it. The bush must be placed at 2 mm from the pedal external face.

After performing an operation on the rear brake control, check the brake pedal position following the instructions detailed in Sect. 4 - 3, Adjusting the position of the gear change and rear brake pedals.

If previously removed, apply prescribed threadlocker to the screw (30), fit the brake master cylinder control rod (31) with spacer (32) and tighten screw (30) to a torque of 10 Nm ± 10% (Sect. 3 - 3, Frame torque settings).

Apply grease the inner surface of the bush (10) and threadlocker on the pin (9).

Fit the O-ring (11) in the pin (9).

Insert the pin (9) on the brake lever (6), place the other O-ring (11) and the washer (3).

Refit the pipe (7), placing the gaskets (23) in both sides of the coupling and tighten it with the special screw (22), and the pipe (21) fixing it with the pipe grommet (17).

Tighten the special screw (22) to a torque of 23 Nm ± 10% (Sect. 3 - 3, Frame torque settings).

Tighten the pin (9) to a torque of 23 Nm ± 10% (Sect. 3 - 3, Frame torque settings).

Tighten the screws (19) to a torque of 10 Nm ± 10% (Sect. 3 - 3, Frame torque settings).

In order to fit the pipes (7), (21) and the retaining clamps, follow the instructions in Sect. 7 - 6, Flexible wiring/hoses positioning.

The brake manufacturer advises against any servicing of the internal components of brake callipers or the master cylinder. Incor­rect overhaul of these critical safety components can endanger rider and passenger safety.

For the ABS front braking system, also refer to Sect. 7 - 5, ABS system operating information, Sect. 7 - 6, System components, Sect. 7 - 7, ABS components maintenance.

If it is necessary to remove the calliper holder bracket (A) refer to Sect. 7 - 13, Removal of the rear wheel eccentric hub and rear wheel axle.

To replace the brake pads follow instructions in the paragraph “Checking brake pad wear and changing brake pads” (Sect. 4 - 3).

Remove the rear eccentric hub (Sect. 7 - 13, Removal of the rear wheel eccentric hub and rear wheel axle).

To check the wear limit of the brake disk refer to Sect. 3 - 1.1, Hydraulic brakes.

Tighten the screws (13) to a torque of 27 Nm± 10% (Sect. 3 - 3, Frame torque settings), in the sequence 1-2-3-4.

Refit the rear eccentric hub as described in Sect. 7 - 13, Removal of the rear wheel eccentric hub and rear wheel axle.

When replacing the brake pipes (33) or removing one of the rear braking system components, pay special attention to the position of the couplings on the pump and the calliper.

Remember to fit the copper faced sealing washers (23) to the hose end fitting when reconnecting the brake pipe to the brake calliper (15).

After orientating the fitting, lock the special screw (22) to a torque of 23 Nm± 10% (Sect. 3 - 3, Frame torque settings).

If the speed sensor (1) was removed, fit it on the calliper holder bracket (A) with the spacer (8) and tighten the screw (2) to a torque of 10 Nm± 10% (Sect. 3 - 3, Frame torque settings).

The gap between the sensor (1) and the brake disc fixing screw must be within 0.6 to 2.2 mm.

If it is necessary to remove the calliper holder bracket (A) in order to refit it, see Sect. 7 - 13, Refitting the rear wheel eccentric hub and rear wheel axle.

Grease the screws (12) and tighten to the torque of 25 Nm± 5% (Sect. 3 - 3, Frame torque settings).

In order to fit the pipe (33), the speed sensor (1) and the retaining clamps follow instructions in Sect. 7-6, Flexible wiring/hoses positioning.