1990
To determine the year of your Yamaha YZ125 using the engine number, locate the engine number, usually stamped on the engine case. The first digit or two of the number often indicates the model year; for example, a number starting with "0" typically indicates a 2000 model. You can also cross-reference the engine number with Yamaha's official documentation or online databases that list engine numbers by year. This will help you identify the specific year of your YZ125.
To determine the year of your Yamaha YZ125 with engine number E111E-010752, you can refer to Yamaha's VIN decoding resources or contact a Yamaha dealer. Typically, the first digit of the engine code can indicate the model year. In this case, the YZ125 model was produced in various years, so verifying through Yamaha's official channels will provide the most accurate information.
2000
It it's year 2000
The engine code "2HG00" and the displacement of "123cm3" suggest that the Yamaha YZ125 is likely from the late 1990s to early 2000s, with the "Y-2" indicating it is a 2002 model. Yamaha often uses specific coding for their engine numbers, which can help identify the production year. However, for the most accurate identification, it's best to refer to Yamaha's official resources or a motorcycle expert.
1994.
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.
The Yamaha engine number 1R9-001092 corresponds to a 1999 Yamaha YZ125 model. This engine is part of the YZ series, which is known for its performance in motocross racing. The 1R9 engine code indicates it is a two-stroke engine, common in dirt bikes of that era.
about 25 to 35lbs depending on the year.
The 10th digit is the year code. L is the 10th digit and stands for 1990.
i have a 2006 and i got clocked at 89mph. I'm sure 1 year isn't a big difference.
When you need to, if you seize it or notice low compression, its time for a rebuild, otherwise ride and enjoy it. When I raced, I would usually get a whole season out of an engine, but that was abusing it for a whole year.