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 canisterRemoving of the rear footrests
The removal of the rear footrests is described for the right side but it is
the same for both.
Undo the pin (13) and remove the rh rear footrest (12) from the frame.
Recover washer (8) and the o-rings (9).
If necessary remove the rubber footrest (11) of the footrest (12).
...
Removal of the camshafts
Unscrew and remove the screws (7) and the o-rings (8) from the cylinder head
covers.
Remove the cylinder head cover (6).
Remove the gaskets (4) and (9).
Repeat the same procedure for the other cylinder head cover. Unscrew the
screws (3) securing the camshaft supports.
Withdra ...
System components
Screw
Abs front speed sensor
Sealing washer
Hose grommet
Abs rear speed sensor
Abs control unit
Front pump - control unit pipe
Control unit - front callipers pipe
Rear pump - control unit pipe
Control unit - rear calliper pipe
Sealing washer
Support
Spacer
Rubber mou ...