APRILIA tuono v4 Owner's Manual page 78

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The rpm indicator (5) will go to the end of the scale for 3 seconds, then it will
return to the minimum value.
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With the engine operating normally, the number of rpms at which the engine
is operating will be displayed instantaneously.
IF THE LOW FUEL WARNING LIGHT ON THE INSTRUMENT PANEL TURNS ON,
REFUEL THE VEHICLE AT ONCE.
03_14
INTENSE USE/ON THE TRACK IN RESERVE CAN DAMAGE THE ENGINE.
THE OVERREVVING THRESHOLD IN NEW VEHICLES IS SET TO 6000 RPM.
RAISE THE THRESHOLD GRADUALLY AS YOU BECOME FAMILIAR WITH THE
VEHICLE AND RUNNING IN HAS BEEN COMPLETED.
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