How do youfind a serial number on a yamaha 125 dirt bike 2004 Should be stamped on the neck of your motorcycle or on the left hand side lower rail. Look on the neck, right side, under the dirt. Yamaha XJ550 models have the code is placed left to right while on other models it's front to back. The vintage Yamaha VIN decoder will decipher any code from any location on the bike. The Yamaha VIN decoder ATV will tell you the information about the type of the engine, its specs and the type of fuel you can use.
You should look on the fram of the bike right in front of the gas tand on the side and it should tell u. 1977 250 YZ250D 1W3-0 NOTE: This Is The First Year Of The Plastic Tank, Used On All Bikes Except The YZ80, YZ100. It Was Also A Completely Different Frame/Monoshock/Engine Design For The 125/250/400 Models. Bob (Hurricane) Hannah Raced An Almost Completely Stock YZ250D In His Sucessful 1977 Season.
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From this very helpful YZ identification web site. Hope this helps Go here to look up serial numbers http://www.motoverse.com/tools/vin/yamaha.asp. Fuji serial number work like this the S means subcontractor/or a plant manufacture the L means the month starting January as A, feb as B and so on the 1 stands for the year of the bike 81 2 would be 82 and so on the rest of the numbers are production total for that month so your bike date is Decemb er 1981 total production in December of 3,413 to be honest with you that's not alot at all i have about 60 fuji bikes but mine are 23,000 built in one month so yours its cool save it From what I can tell, it is next to impossible to trace the age of most bikes with the serial number. However, many of the components will have date codes on them.
You just have to know where to look and what to look for. At the time of production, both the component manufacturer and the bicycle manufacturer will have had a certain amount of inventory that might correspond to a few days up to six months or even a year if they are very sloppy. So I would figure about six months after the age of the component to guestimate the age of the bike. Also, keep in mind that the new year's models could be introduced prior to the end of the calendar y.
Every prefix from a Yamaha vehicle identification number ( VIN number) refers to a model code of a Yamaha motorcycle. Here we have a list from all prefixes and model codes including their model year and the available colors available in that year. You can decode your vin number right here, if you are not sure or your prefix is not listed us your VIN number and we will check it for you! It concerns all Yamaha Motorcycle models from 1995 untill 2012.