APRILIA tuono v4 Owner's Manual page 108

To check:
•
Set the ignition switch to "OFF" to avoid an accidental short circuit.
•
Remove the rider saddle.
•
Open the cover of the auxiliary fuse box (1).
•
Take out one fuse at a time and check whether the filament (2) is broken.
•
Before replacing the fuse, find and solve, whenever possible, the problem
that caused it to blow.
•
If the fuse is damaged, replace it with one of the same current rating.
•
Remove the rider saddle.
•
To check the main fuses, carry out the same operations described above for
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auxiliary fuses.
NOTE
IF THE SPARE FUSE IS USED, REPLACE IT WITH ONE OF THE SAME TYPE IN
THE CORRESPONDING FITTING.
CAUTION
REMOVING THE 30A FUSE RESETS THESE FUNCTIONS: DIGITAL CLOCK, TRIP
INFORMATION AND CHRONOMETER TIMES.
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