Gilera 633721 Workshop Manual page 211

Nexus 500 euro 3
Deleting stored failures
After mounting any failures, connect the diagnostic
tester.
Select the menu on the "errors deleting" function.
Press "OK" and follow the instructions. Perform a
trial cycle and check whether the failure occurs
again.
Specific tooling
020460Y Scooter diagnosis and tester
For troubleshooting for any faults see the related chapter sections.
Fuel supply system
Fuel is fed to the injector by a pump, a filter and a
pressure regulator integrated with the fuel level in-
dicator inside the tank.
The pump unit is connected to the injector by:
2 semi-flexible pipes
4 quick unions
1 T union with O-ring and retain bracket for the injector
The pipes are crossed and fixed to the intake manifold to prevent wear of the quick unions connected
to the T union for the injector.
N.B.
BEFORE WORKING ON THE FUEL SUPPLY SYSTEM, CAREFULLY CLEAN THE PARTS TO
PREVENT DAMAGING THE FAST-RELEASE COUPLING SEAL OR TO PREVENT DIRT GETTING
INTO THE DUCTS.
CAUTION
THE SYSTEM IS UNDER PRESSURE.
DO NOT SMOKE DURING ANY OPERATION.
PREVENT ANY FUEL SPRAYING.
WARNING
- BEFORE STARTING THE ENGINE, CHECK WHETHER THERE IS FUEL IN THE TANK.
- DO NOT USE THE SCOOTER IN RESERVE FOR A LONG TIME, UP TO THE POSSIBILITY OF
RUNNING OUT OF FUEL.
- IF THE SCOOTER IS EXPECTED TO REMAIN UNUSED FOR A LONG TIME, REFILL THE TANK
AT LEAST TO HALF THE LEVEL.
FAILURE TO OBSERVE THESE RULES CAN DAMAGE THE PUMP.
Injection
INJEC - 211