VESPA 633844 IT Service Manual page 175

Vespa GTV 250 i.e.
Remove the gas command fitting as indicated in
the photograph
Refitting the butterfly valve
To refit, perform the operations in the reverse or-
der from the removal operations being careful to
position the clip fixing the throttle body to the air
filter bellows at 45° as shown in the photograph.
Pump supply circuit
The HV Coil control is enabled by the injection load remote control (black-green cable).
Injection
INJEC - 15