the engine could stall and be difficult to restart because the wire terminals in the fuel pump wire coupler have corroded. Water can enter from the main wire harness end and run through the harness to the fuel pump coupler.
If the water remains in the coupler for an extended period of time, the terminals can become corroded, which can prevent the fuel pump from operating properly. If this corrosion affects fuel pump operation while the scooter is being ridden there could be a crash resulting in injury or death.
Dealers will be able to install a fix and replace any corroded parts of the harness after May 1st. If you own one of these scooters, contact Yamaha at 1-800-962-7926.