Fuel Supply; Removing The Carburettor; Kehin - PIAGGIO Beverly 250 USA Workshop Manual

Beverly 250 USA
the valve opens and the depression is suddenly
set to zero.
Lack of tightness or the fact that the valve opens
at different vacuum values should be regarded as
anomalies. In this case, replace it.
N.B.
LACK OF TIGHTNESS IN THE CUT-OFF VALVE
RESULTS IN EXHAUST NOISE (EXPLOSIONS
IN THE MUFFLER). INCORRECT CUT-OFF
VALVE CALIBRATION CAN RESULT IN CATA-
LYTIC CONVERTER MALFUNCTIONING
N.B.
A FAULTY CUT-OFF VALVE DIAPHRAGM, BE-
SIDES JEOPARDISING THE CORRECT OPER-
ATION OF THE CUT-OFF VALVE, ALSO DAM-
AGES IDLE FUNCTIONING
Specific tooling
020329Y MityVac vacuum-operated pump

Fuel supply

Removing the carburettor

Kehin

- To detach the carburettor from the engine, it is
necessary to move the air filter and remove the
transmission throttle control, the automatic starter
connection, the clamps anchoring the carburettor
to the filter housing and to the inlet manifold, the
air delivery pipe to the diaphragm, and the intake
fitting.
- Take out the carburettor and rotate it so as to
remove the screw with the water joint and the
pipes.
N.B.
THIS LAST OPERATION IS NECESSARY SO
AS NO TO EMPTY THE COOLING SYSTEM.
Engine
ENG - 71