USA models are equipped with an additional system featuring a Canister filter 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 intake manifolds (A) and (B) via the hoses (2A) and (2B).
Breather hose (C) and hose (5) vent to the ground.
For correct positioning of the connection hoses refer to the indications given below.