PIAGGIO MSS X9 EVOLUTION 250 Workshop Manual page 154

Engine
Remove the cover of the duct from the carburettor
to the starter nozzle as shown in the figure.
-Remove the maximum nozzle.
-Remove diffuser.
Remove the sprayer.
N.B.
THIS OPERATION IS NECESSARY TO AVOID LOSING
SPRAYER PARTS WHEN CLEANING THE CARBURETTOR
BODY. IF THE SPRAYER IS FORCED IN ITS HOUSING DO
NOT ATTEMPT TO REMOVE IT AS THIS WILL ONLY DAM-
AGE IT.
-Remove the minimum nozzle.
ENG - 154
MSS X9 Evolution 250