1985 long shaft
Usually the serial number is on a tag mounted on the bracket that holds the outboard engine to the boat.
According to the Yamaha guide, the outbound serial number is located on the label in the clamp bracket. The serial number is helpful when replacing your motor.
I HAVE A OUTBOARD C150ztXRU
216793
235386
40tlru is the model number for a 1996 2-stroke, oil-injected, 40hp Yamaha outboard boat motor, not a serial number and not for a motorcycle.
1981
1979/1980
2005
you can't
It is a 2003 4-stroke outboard
The Yamaha 2-stroke outboard motors with serial numbers 417721 and 413988 were likely manufactured in the early 1990s. Yamaha typically uses a serial number system where the first few digits can indicate the year of production. For precise identification, it is recommended to consult Yamaha's official resources or a dealer with access to their database.