1. Yamaha Piano Year Model Codes
2. Yamaha Outboard Engine Year Codes
3. Yamaha Model Year Codes
4. Yamaha Outboard Model Year Codes

Yamaha Year Codes

In Europe the Yamaha outboardmotors have a CE approval label on the engine. My dealer told me once that the code on this label gives the year of production. These are the codes I know: 1999: T, 2000: S, 2001: R, 2002: Q and 2003: P. You see that it is the alphabet in reverse order. My motor is from 2001, and has a R on it's CE label. This tool works by firstly decoding the Yamaha factory code from your Yamaha grand piano or Yamaha upright / vertical piano to see where it was made and then comparing the rest of the serial number with records for the first and last manufactured pianos in each year from that specific Yamaha factory. If you wish to buy a bike, the owner tells you the year, but the Yamaha ATV VIN decoder gives you another year, don't panic. The year in the code means the model year of the motor, but not the year when it was manufactured. Of course, it will be strange if the difference is more than a year or two.

This is a simple chart of what letters correspond to what years for Yamaha models. You ever wonder why some people refer to your 82 XJ650 Maxim as a XJ650J and why is it called XJ650K for the next year even though it is the same generation? Well, this chart should never make you ask again. Also below is a break down and explanation of model coding.

Breaking Down The Model

The basic way to break down a bikes model is seperate it's basic parts. Lets take the model below as an example.

'82 XJ650RJ Seca

Yamaha Piano Year Model Codes

XJ

650

R

J

Seca

Full Name

Yamaha Outboard Engine Year Codes

Engine Family

cc

Ext Type

Year

Model Name

Yamaha Model Year Codes

As you can see above the first section is the entire name '82 XJ650RJ Seca and this tells you all you need to know to basically identify this bike and what parts it uses.
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The second section shows you the first break-down is the engine family this bike belongs to. In this case it is the XJ family which basically is DOHC four stroke engines with in-line cylinders. It is not the only Yamaha motor family with these characteristics.
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The third section shows the second break-down which is it's listed cc (cubic centimeters) range which is 650. Typically based on a round-up or round-down of the actual cc of the engine. In this bikes case the actual size is 653cc.
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The fourth section shows the third break-down which is bike extended model type. In this case it is a R model which tells us it is a Seca. If it did not have any letter in this section it would be the standard model that is called the Maxim and be called a '82 XJ650J. Typically when no extended type code is shown it breaks down to the first version, or base model of the bike. The extension type is almost always a custom or special version of the first model that was offered. I used the XJ650 specifically because there are 3 total versions in '82. First was the standard Maxim model XJ650J, the second was the XJ650RJ which was the Seca, and last was the XJ650LJ which was the Seca Turbo. You have to watch Yamaha extended codes because they are not literally for just that style like some other brand bikes. A example is the '81 XJ650LH which you would assume would be the same as the XJ650LJ Seca Turbo '82 just one year earlier, but this is wrong. It is actually the Midnight Maxim version. So the L has to be used along with the year code J or H to complete the bikes description.
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The fifth section tells us the final break-down of the code which is the year. In this case it is a J which was applied to all '82 model Yamaha motorcycles. Like the last area you read, you must use this code in combination with the complete name. An example of this would be XJ600SJ Seca 2 which you could assume is another '82 model when in fact it is actually a '97 model. Yamaha recycled the letters starting in 1990 and again in 2011. Letters like A were used 3 times over the years! Other letters like C and U were only used once total and XYZ only used after they recycled the letters. If you ever see a C at the end of any model later than '76 it is a California model and the C would be in addition to the normal code and always at the end. Yamaha is not the easiest code to memorize so bookmark this chart if your into them.
Before using this system when Yamaha was a lot less diverse with their street bike offerings they simply used a ABC system to show the year and did not use the final section below that incorporates the number too. An example would be a Yamaha 350cc twin R5. It progresses '70 R5A, '71 R5B, '72 R5C. Yamaha used a lot of simple alpha-numeric names for early bikes that had no cc reference so this was the best way, at the time, to state the model. It was much easier to reference a model with the basic cc in the name. For instance the R5 you just have to know it is a 350 where as the following model was a '73 RD350 which is obvious as a 350cc. The earlier you get the weirder the system gets.
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The final section is simply the actual name of the model type. Yamaha uses names to attach to various models like the Maxim made 400cc to 1100cc, Seca made 400cc to 900cc, Virago's which are Yamaha's first generation V-Twins, and many others. They also may have a model name that includes the size like a '98 XVS650AK which can be referred to simply as a '98 650 V-Star Classic.

Yamaha Outboard Model Year Codes

Making sure you learn what the entire model name is for your bike will ensure you do not get incorrect parts from your supplier. A perfect example of a mistake would be your in need of a clutch cable for your '82 XJ650RJ Seca. If you simply ask the supplier for a '82 XJ650 clutch cable, and disregard the type, it will not fit your model if the bike is stock. If you buy a cable made for a regular XJ650, which is a standard Maxim model, the cable will be too long for the R models shorter set of handlebars. That means another trip to the supplier, or even worse, being stuck with it.