Usa models are equipped with an additional system with an evaporative emissions canister that prevents fuel fumes from being discharged into the atmosphere.
The breather hose (4) is connected to the canister filter (1); when the fuel has been filtered, it is returned through the hose (2) to the horizontal (a) and vertical (b) intake manifolds via the hoses (2a) and (2b). Drainage pipe (c) and the hose (5) vent to the ground.
For correct positioning of the connection hoses consult the indications given below.

Evaporative emissions canister
Removal of the evaporative emissions canisterVehicle pre-delivery
Transport packaging integrity check (if required);
Removal from the transport packaging (if required);
Motorcycle integrity check;
Check of the supplied kit completeness (refer to the parts list supplied
together with the bike packaging);
Only if the bike is supplied in a crate: handle ...
Renewal of the cooling fan
Loosen the electro-fan retaining screws (15) and (17) and remove the
electro-fan (18) from the radiator.
Carry out the same procedure for the other radiator's electro-fan.
On refitting, position the coolant radiator fan (18) as shown on the fan support
(16), so that the three fan holes mat ...
Refitting the brake disks
Before refitting the brake disc to the wheel, clean all contact surfaces
thoroughly and smear a medium strength
threadlocker on the threads of retaining screws (5).
Operating on the left side, fit the phonic wheel (6).
Tighten the fixing screws (5) of the brake disk (7) to the wheel followi ...