PIAGGIO 500 cc, Service Manual

Page: 151 / 239

Fuel injection
9 - 39
9
- Cancellation of memorized anomalies
After any repairs, connect the diagnosis tester 020460Y
(see page 9-17).
Select the function menu “ERROR CANCELLATION”
Press OK and follow the instructions given.
Carry out a trial run to check if the anomaly is repeated.
For a guide to resolving any anomalies consult the
related parts of this chapter.
FUEL SUPPLY SYSTEM
General details
Fuel supply to the injector is guaranteed by a pump,
a filter and a pressure regulator integrated with a fuel
level indicator inside the tank.
The pump assembly is connected to the injector via:
2 semi-rigid tubes
4 quick-connections
1 T-ring joint with O ring and injector stop bracket
The tubes are crossed and fixed to the air intake
manifold so as not to provoke wear and tear on the
quick-connections connected to the injector T-ring joint.
NOTE : before carrying out work on the supply system, all parts should be cleaned accurately to avoid damaging the
stability of the quick-connections or allowing the infiltration of impurities into the ducts.
WARNING : The system is pressurized.
Do not smoke while working on parts.
Sprays of fuel can be expected.
PRECAUTIONS :
- Before starting the engine, ensure there is fuel in the tank.
- Do not run the vehicle on the reserve tank, so as to avoid the risk of running dry.
- If a long period of disuse is expected, fill the tank to at least half.
FAILURE TO RESPECT THESE REGULATIONS MAY DAMAGE THE PUMP
NJECTOR T-RING
RETURN
DELIVERY
RUNNING
DIRECTION