The brake master cylinder is supplied only as a complete unit; internal components cannot be replaced.
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.

To disassemble the various parts of the system, refer to the exploded view at the beginning of this chapter.
Warning
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.
Removing of the rear brake control
Refitting the rear brake controlResidual range indication when the service is due
After resetting the first oil service warning (triggered at
1000 km), upon every key-on the system displays the
indication of which type of service should be performed next
(oil service or desmo service) and the residual range.
A (green) warning (1, fig. 32) Is activated for 2 seconds on
ever ...
Refitting the clutch master cylinder assembly
Insert the clutch master cylinder assembly (3) and the clamp (6) on the left
handlebar, so that the top mating faces
match the mark (z) on the handlebar as shown.
Couple terminal (6) to the clutch master cylinder control and fix them with
the screws (v).
Tighten the retaining screws ...
External components
Oil breather valve
O-ring
Sealing washer
Gear position sensor
Cylinder barrel/head stud
Nipple
By-pass spring
Plug
Plug
Aluminium gasket
Nut
Lock washer
Timing gear pair
Key
Key
O-ring
Screw
Locating dowel
Starter idler gear
Washer
Gear shaft
O-ring
...