hi , benr might have taken one off, as he has a spare for sale... as far as i can tell from reading its it two parts, prob the main body with the injector on it which seems to be plastic!!! and then the coupling with the throttle cables attached to it, which according to below if you take off the three screw nuts first which should release the throttle cable side to the main body which has injector on it...
anyways more pics here to see what i mean
http://www.ebay.co.uk/sch/i.html?_trksi ... &_from=R40" onclick="window.open(this.href);return false;
this one shows the complete two halves one half injector plus fuel feeds and returns and the other side with the throttle cable assembly on it (which you should get off first)
http://www.ebay.co.uk/itm/PIAGGIO-X9-TH ... 43baf95a07" onclick="window.open(this.href);return false;
this pic shows without the injector on it and without the fuel feeds, but you get idea of this being attached to inlet and the three screw (bolt) area
http://www.ebay.co.uk/itm/Piaggio-Union ... 43bb64bd9d" onclick="window.open(this.href);return false;
what the manual states regarding throttle body:
THE THROTTLE BODY IS A PART WHICH INCLUDES VARIOUS COMPONENTS AND IS USUALLY
SUPPLIED COMPLETE. TO TEST THESE COMPONENTS SEE THE "INJECTION" CHAPTER.
to take off Remove the 3 retaining screws
CAUTION
THE THROTTLE BODY COMES PRE-CALIBRATED. TAMPERING WITH THE THROTTLE STOP
REGISTER IS TO BE ABSOLUTELY AVOIDED. THIS REGISTER HAS BEEN SEALED FOR THIS
PURPOSE. FOR PROBLEMS WITH IDLING SEE THE "INJECTION" CHAPTER.
N.B.
REMOVAL OF THE THROTTLE BODY CAN BE EFFECTED WITH THE MANIFOLD ON OR OFF
THE ENGINE.
Make sure the seal rims on the coupling surfaces
between the manifold-throttle body and manifoldhead
are in good condition.
CAUTION
IF AIR GETS IN IT CAN JEOPARDISE THE OPERATION
OF THE INJECTION SYSTEM, ESPECIALLY
WHEN THE ENGINE IS IDLING.
Make sure the throttle valve and related conduit
are clean.
- Make sure the supplementary air channel managed
by the stepper motor is clean.
N.B.
IF THE THROTTLE BODY IS REPLACED with another one, RESET THE T.P.S. AND ADJUST THE CO%.
ONCE THE ENGINE IS REPAIRED CHECK THE CO% VALUE WHILE IDLING TO MAKE SURE IT