The Engine Serial number is located near the

starter at the Flywheel housing, the Rocker

Arm or Flame Arrestor Cover.

The Sterndrive Serial number is located on

the Upper Driveshaft housing Starboard side

or on the Back of the housing.

The Transom Serial number is located on the

Upper part of the Transom Assembly

You can find your Mercury outboard serial number and model number on an ID tag on the mounting bracket, or in some cases on an engine block freeze plug.

The ID plate/sticker should be somewhere above the waterline on either the port or starboard side of the bracket. Take a picture of your outboard’s ID plate/sticker, or write down the ID’s information so you can quickly reference it whenever you need replacement parts for your Yamaha outboard