Pump And Fuel Filter Control - PIAGGIO 500 cc Service Manual

Fuel injection
YES NO
Replace the pressure regulator
Replace the fuel pump
See page 9-54 - pump support overhaul.
See page 9-54 - pump support
overhaul.

Pump and fuel filter control

This procedure is useful during maintenance to check the efficiency of the outlet filter.
Connect the diagnosis tester 020460Y see page 9-17.
Connect the fuel pressure control kit 020480Y see page 9-46.
Select the "ACTIVE DIAGNOSIS" function menu on
the diagnosis tester.
Select the function "PUMP DIAGNOSIS".
The pump activates for 30 seconds.
Allow to purge for a few seconds.
Check that the system has no leaks.
Using long, flat-tonged pliers, squeeze the return
9
duct for a moment by acting only on the extention of
special tool 020480Y with pump feed tension
greater than 12 V, check the maximum system
pressure.
maximum pressure = > 600 KPa (6 BAR)
YES NO
9 - 49