If some "sponginess" is detected on the brake control, due to air bubbles in the system, bleed the system, as indicated in sect. 4 - 3, Changing the brake fluid.
Before bleeding a brake pump, move back the calliper pistons, as indicated in (sect. 4 - 3, Changing the brake fluid) to Drain in the pump the air collected near the abs control unit purge must be carried out by means of the corresponding joints (a) placed near the callipers and the brake pumps.
Important
Do not undo the fixing screws of the joints of the pipes on the abs hydraulic control unit, unless control unit replacement is necessary.
Important
If the abs control unit is replaced, this must be supplied with secondary circuit already full of fluid; the control unit must be fitted and the system filled and bleeded as a traditional system.



Adjusting of the air-gap phonic wheel sensor
Handlebar unitDisassembly of gear interlock plunger and pawl assembly
Unscrew the interlock plunger screw (5) and remove the seal (6), spring (7)
and the detent ball (8).
Unscrew the clutch-side crankcase half screw (3) and remove the pawl (4),
washer (2) and spring (1).
...
Front brake lever
Pull the lever (1, fig. 94) Towards the twistgrip to operate the
front brake. The system is hydraulically assisted and you only
need to pull the lever gently.
The control lever (1, fig. 94) Features a dial adjuster (2, fig. 94)
For lever distance from the twistgrip on handlebar
adjustment.
...
Replacing the rear phonic wheel sensor
Disconnect the rear abs sensor (5) connector (c) from the main electric
wiring.
Open all the retainer clamps of the rear abs sensor cable (5): refer to table of
sect. 7 - 6, Flexible wiring/hoses
positioning.
Remove the rear abs sensor (5) from its seat on the rear calliper mounting ...