What year is my mercury 9.9 hp outboard motor serial number 0b238489?

To determine the year of your Mercury 9.9 hp outboard motor with serial number 0B238489, you can refer to the Mercury Marine serial number lookup charts. Typically, the first letter in the serial number indicates the year; in this case, "B" corresponds to 1986. Therefore, your outboard motor is likely from 1986.