
Drain the hydraulic fluid that is inside the front and rear braking system tubes by disconnecting them from the master cylinder and the calliper (sect. 4 -3, Changing the brake fluid).
Disconnect the connector (a) of the abs control unit (6).

Loosen the screws (16) that retain the abs control unit support (12) and remove it from the vehicle.

Undo the four special screw (17) fixing the pipes (10), (9), (8) and (7), on the abs control unit (6), removing the gaskets (11).
Warning
Every time that gaskets (11) are removed, they must be replaced with new gaskets (11).

Important
Do not open the abs control unit: if it is faulty, replace it.
Note
If it is necessary to replace one or more pipes, follow the instructions indicated in paragraph "flexible wiring/hoses positioning" of this section.
Replacing the rear phonic wheel sensor
Refitting the abs control unitAbs system operating information
The response of the system is based on the analysis of the speed signals for
front and rear wheels; the system is
automatically deactivated if either of these signals is missing.
Note
In the event of the abs control unit detecting a fault in the abs
electronic management system, it activates ...
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
...
Removal of the front wheel
Support the bike so that the front wheel is raised from the ground.
Remove the front brake calliper (b) by unscrewing the two screws (a) securing
the calliper to the fork leg; do not
disconnect the calliper from the hose.
Warning
Do not operate the brake lever when the callipers are ...