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 canisterDigital rpm indication function
This function displays the number of rpms for improved
accuracy when setting idle rpm.
To access the function it is necessary to view the "setting" menu page 48, using
button (1, fig. 14) ?"
" or (2, fig. 14) ?" " select the "rpm" function and
press ...
Refitting the hands free
Reassembly is a reversal of the removal procedure: in particular apply
prescribed threadlocker to screws (2) and tighten
them to a torque of 20 nm +/- 10% (sect. 3 - 3, Frame torque settings).
If the hands free button has been previously removed, when refitting it insert
the spring (6) on pi ...
Information about the model
Identification data
Diavel identification data
Each ducati motorcycle has two identification numbers -the frame number and
the engine number- and an ec nameplate
(a) (not present on the us version).
Note
Please quote these numbers, which identify the motorcycle model, when
ordering spare pa ...