Decoding Yamaha Outboard Motor Model Number and Manufacture Date (MFG Date)

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Decoding Yamaha Outboard Motor Model Number and Manufacture Date (MFG Date)

If you find yourself looking at a Yamaha Outboard you may be wondering what year this outboard was manufactured. Fortunately, Yamaha has made it easy to identify this information.

Yamaha outboards manufactured between 1984-2004: you must first locate the Model Number located on a label on the outboard’s transom bracket.
 Yamaha Model Number
 The top number is the model number. What you are looking for is the last letter in that model number. Once you have that letter, use the chart below to identify the year of your engine.
2005 = D
2004 = C
2003 = B
2002 = A
2001 = Z
2000 = Y
Yamaha Outboard Model Code Reference Chart
Yamaha changed the way they identify the manufacture year of their engines starting in 2005. On these engines a separate stamp with the “MFG Date” is located on the transom bracket. This stamp simply states the month and year that the engine was manufactured.
Where the model number is located
 Yamaha Manufacture Date Location


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