PIAGGIO 500 cc Service Manual page 217

Fuel injection
Check if the revolutions counter has reached the
bottom scale.
YES NO
Check the analog instrument and the digital instrument panel.
Connect the diagnosis tester, 020460Y see page 9-17
Set ignition to "ON" with switch in position "RUN" and side stand raised.
Select Active diagnosis on the menu
Activate diagnosis of the revolutions counter.
Check that revolutions counter instrument rises
from zero to 3500 revolutions before
returning to zero.
9
YES NO
The control circuit of the revolutions counter is Connect the special tool, 020481Y, to the fuel
working. injection system. See page 9-8.
9 - 105