PIAGGIO 633929(IT), Руководство по обслуживанию станции, Страница: 165 / 314

- For the minimum circuit, make sure the following
points are properly cleaned: air gauging, outlet
section controlled by flow screw, progression
holes near the throttle valve.
- For the starter circuit, blow the connection pipe properly with the jet. This is necessary because the
nozzle support hides other inaccessible internal calibrations.
- Blow the intake nozzle properly.
N.B.
THE ACCELERATION NOZZLE OUTLET IS EXTREMELY SMALL AND IS ORIENTED TO THE
THROTTLE VALVE. NOZZLE INCORRECT ORIENTATION RESULTS IN INADEQUATE SPRAY-
ING.
- Check that there are 5 closing ball joints for the operating pipes on the carburettor body.
- Check that the coupling surfaces, the tank and the diaphragm are not dented.
-Check that the depression valve housing pipe is not scratched.
- Check that the throttle valve and the shaft do not show abnormal wear.
- Check that the plunger seat does not show abnormal wear.
- Replace the carburettor in case of irregularities.
- Check that the return spring of the accelerating pump rocking lever is not deformed by over-stretching.
N.B.
TO AVOID DAMAGES, DO NOT INTRODUCE METAL OBJECTS IN THE ADJUSTED SECTIONS.
- Wash and blow the minimum nozzle properly and
reassemble it.
MP3 125
Engine
ENG - 71