Important
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.
Before removing the parts in question, you must first carry out the following operations:

note
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.
Unscrew and remove the special screw (22) fixing the pipes (33) to the rear brake calliper and the corresponding couplings (23).
Remove tube (33).
Undo the two fixing screws (12) of the rear brake calliper (15) to the calliper holder bracket and remove the brake calliper (15).
If it is necessary to remove the calliper holder bracket (a) refer to sec. 7 - 13, Removal of the rear wheel eccentric hub and rear wheel shaft.
Note
To replace the brake pads follow instructions in the paragraph "checking brake pad wear and changing brake pads" (sec. 4 - 3).
To remove the speed sensor (1), undo the retaining screw (2), having care not to damage the airgap spacer (8) and the washer (32).

Only the following parts should be renewed:
Refer to the exploded view at the beginning of this section for indications on renewal of the above components.
Refitting the rear brake control
Removal of the rear brake discChecking the engine timing
Set the engine to the configuration described for the "checking and adjusting
the valve clearances", previously indicated.
Install tool 88765.1188 (G) in the spark plug bore to determine the piston tdc,
the gauges (h) on the tool 88765.1518
And the timing check tool (degree wheel (l) 887 ...
Engaged gear indicator
This function displays the gears (1, fig. 25).
The instrument panel receives information and indicates the
engaged gear or "n" for neutral.
Note
In the case of a gear sensor "error", a dash "-" (not
flashing) will be displayed.
...
Refitting the flywheel-alternator assembly
Fit the roller cage unit (20) with washer (18) and internal ring (19),
applying prescribed grease on the washer (18).
Install the roller cage assembly (20) with the washer (18) and inner race
(19).
Install the flywheel assembly (v) with the gear (21), aligning the notches as
shown in ...