Yamaha STX 125 valve clearance - Yamaha Motorcycles

SOURCE: valve clearances

Hi Anne

The cold valve lash for your bike are intake 0.08-0.12mm and exhaust 0.10-0.14mm. You can get this and more specifications for your machine for free here.

regards
robotek

SOURCE: glowing exhaust header yamaha wr250f

It won't be valve timing or clearance. The fuel/air mix would be the culprit. Clean the carburetor with special attention to the idle circuit. Remount the carb with new manifold gaskets. A manifold air leak will mess up the mixture. Also, get a new spark plug one heat range colder than stock. Hope this helps out!

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SOURCE: What are the valve clearances of the engine of

Valve clearances are
in 0,12 mm
ex 0,15 mm
on cold engine

SOURCE: what is valve clearance for a 250 yamaha timberwolf

what an *******. If I had a manual or my library had one I wouldnt be asking the question. If I need help fixing something dont tell me to go jump in a lake just dont answer

SOURCE: what are the valve clearances on a yamaha 125 TW

They are listed in the service manual.
You can download a free one at
http://www.yamaha-motor-europe.com/community/service/manuals.jsp
Good luck!