What year is Yamaha outboard engine serial number 1090756 F4AMH 68D S?

To determine the year of the Yamaha outboard engine with serial number 1090756, you can refer to the manufacturer's guidelines. Typically, Yamaha's outboard engine serial numbers include a code that indicates the production year. For the F4AMH model, the "68D" part of the serial number typically suggests it was produced in 2006. However, for precise identification, it's best to consult Yamaha's official documentation or a dealer.