The serial number plate is on the front of the frame below the handlebars, behind the headlight. For 16-digit serial numbers, go to the Yamaha web site. For serial numbers less than 16 digits, take the number to a Yamaha dealer and ask for a search from Yamaha Japan.
4 LB-008267
Most serial numbers are stamped into the right side of the tunnel. There should also be a tag there with the numbers on it also.
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.
The serial numbers on the back of a watch are there for the customer to know that the watch is real. The serial numbers can be looked up at the retailers.
By downloading serial numbers I assume you mean a list of years and serial numbers? And for the record, only John Deere dealers have this capability to ensure that serial numbers are not forged or altered.
Most of the numbers are the serial number.
Usually caliber and/or serial numbers.
Serial number
the last digit of your serial number is the year, this is the case for my chappy Yamaha 85 the last digit of your serial number is the year, this is the case for my chappy Yamaha 85
Not as easy as it is to call Yamaha with your serial number and have them tell you exactly what it is.
There is a serial number stamped on the engine (e.g. E112E-****) that may help. Maybe you can contact Yamaha with that number for an age? Or you can just search yz125 on bikepics.com and just find the year that looks like yours.