Before removing the eccentric hub, you must first remove the parts listed below.

Slacken off the screws (34).
Remove the spacer (20) and the inner ring (21) on the chain side and remove the wheel shaft (31) with the brake disc (30) from the opposite side.


Remove the circlip (19) on the wheel side of the eccentric hub.
Remove washers (16), the o-ring (17) and the calliper holding plate (18) with the other o-ring (17).



Withdraw the eccentric hub (22) from the chain side of the swingarm.

Note
The rear hub is a component particularly critical to the dynamic safety of the motorcycle; under no circumstances may the internal components of the hub be serviced or repaired. The hub may be ordered as a complete assembly, spare part no. 756.2.013.1A.
Swingarm
Refitting the rear wheel eccentric hub and rear wheel shaftAdjusting of the air-gap phonic wheel sensor
(For front as well as rear sensor) in each case of maintenance that foresees:
Replacement or refitting of the wheel
Replacement or refitting of the phonic wheel (1) or (2)
Replacement or refitting of the brake discs
Replacement or refitting of the speed sensor (3) or (4)
(Front) replacem ...
General safety rules
Carbon monoxide
When a maintenance operation must be performed with the engine running, maker
sure that the working area is wellventilated.
Never run the engine in an enclosed space.
Warning
Exhaust fumes contain carbon monoxide, which is a poisonous gas that
can cause unconsciousness or e ...
Gear indicator display on dashboard shows dashes, engaged gear not displayed
correctly, idle speed irregular
with gearbox in neutral
Fault codes
Dds: gear sensor diagnosis -> short circuit to ground or open circuit (s.C.
Gnd or c.O.) - Short circuit to vdc (s.C. Vdc)
- congruence (generic error - signal not correct).
Dashboard: the error "gear sensor" is shown on the service display. The eobd
warning light activates.
...