Carburettor; 250Cc Version - PIAGGIO MSS X9 EVOLUTION 250 Workshop Manual

Characteristics
manifold that cuts the air inlet in deceleration, to
avoid explosions in the muffler.
System description:
Air is sucked in through the hole "B" and gets
through the tube into the filter housing "C" where
the filtering element "D"is.
Now, the filtered air enters the diaphragm device
"A" and then is channelled to the head.
The air passes through a flanged pipe "E"connec-
ted to the air head and reaches a discharge joint
in order to supply oxygen to the unburned gases
before the catalytic converter, thus favouring an
improved reaction of the catalytic converter.

Carburettor

250cc Version

Keihin
Specification
Depression carburettor
Body stamping
Stamping
Tapered pin notches position from top
Max. air jet
Diffuser nozzle
Starter jet
Starter device resistance
Diffuser
CHAR - 12
KEHIN CARBURETTOR
MSS X9 Evolution 250
Desc./Quantity
CVEK-30
CVEK
303A
Fixed position
70
Ø 2.8
42
~ 20 Ω
Ø 29