Piaggio Fly 4T servicemanual - Scootergrisen
Piaggio Fly 4T servicemanual - Scootergrisen
Piaggio Fly 4T servicemanual - Scootergrisen
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MSS <strong>Fly</strong> 50 <strong>4T</strong> Engine<br />
Refitting the carburettor<br />
- Before refitting, wash the carburettor body accu-<br />
rately with a degreasing solvent and compressed<br />
air.<br />
- Pay special attention to the fuel supply pipe and<br />
the plunger seat.<br />
- For the minimum circuit, make sure the following<br />
points are properly cleaned: air gauging, outlet<br />
section controlled by flow screw, progression<br />
holes near the throttle valve.<br />
- For the starter circuit, blow the connection pipe<br />
properly with the jet. This is necessary because<br />
the nozzle support hides other inaccessible inter-<br />
nal calibrations.<br />
- Blow the intake nozzle properly.<br />
The acceleration nozzle outlet is extremely small<br />
and is oriented to the throttle valve.<br />
- Check that the carburettor body has the closing ball for the idle circuit pipe.<br />
- Check that the coupling surfaces, the chamber and the diaphragm are not dented.<br />
-Check that the depression valve housing pipe is not scratched.<br />
- Check that the throttle valve and the shaft do not show abnormal wear.<br />
- Check that the plunger seat does not show abnormal wear.<br />
- Replace the carburettor in case of irregularities.<br />
N.B.<br />
TO AVOID DAMAGES, DO NOT INTRODUCE METAL OBJECTS IN THE ADJUSTED SECTIONS.<br />
ENG - 117
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