PIAGGIO 633929(IT) Service Station Manual page 164

Engine
- Remove the minimum flow set screw and the
spring.
CAUTION
DO NOT ATTEMPT REMOVING PARTS EM-
BEDDED IN THE CARBURETTOR BODY SUCH
AS: FUEL SUPPLY PIPE, PLUNGER HOUSING,
STARTER NOZZLE, PIT COVER FOR PRO-
GRESSIONS AND INLET NOZZLE, MINIMUM
AND MAXIMUM AIR GAUGE, THROTTLE
VALVE CONTROL SHAFT. DO NOT REMOVE
THROTTLE-SHAFT CONNECTION SCREWS.
THE FIXING SCREWS ARE CAULKED AFTER
ASSEMBLY AND THEIR REMOVAL DAMAGES
THE SHAFT.
Refitting the carburettor
- Before refitting, wash the carburettor body accu-
rately with petrol and compressed air.
- Pay special attention to the fuel supply pipe and
the plunger seat.
- For maximum circuit, check the air adjustment is
correct as shown in the figure.
ENG - 70
MP3 125