Piaggio has officially recalled 2,428 2006-08 BV500 and 2005-07 X9 500 scooters to repair a fuel pump hose issue:
The hose connecting the fuel filter to the fuel pump may come loose, causing a drop or loss of fuel pressure to the engine. These parts are located inside the fuel tank so no signs of a fuel leak will be visible from the outside. Dealers will replace the fuel hoses on affected scooters. Potentially 2,428 scooters are included in the recall.
(Here’s another story, from Dealernews)