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I just bought a 2010 ktm 150sx (my first bike) and i can't figure out what this screw does? Theres one on each side and they can be loosened but not taken out, are they supposed to be loose or tight? Its the one that has some oil stains around it. image.jpeg image-2.jpeg

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I just bought a 2010 ktm 150sx (my first bike) and i can't figure out what this screw does? Theres one on each side and they can be loosened but not taken out, are they supposed to be loose or tight? Its the one that has some oil stains around it. attachicon.gifimage.jpeg attachicon.gifimage-2.jpeg

It's your power valve (governor).  Here's a link that might be helpful.  I'd leave it alone unless you're in the process of doing a top end rebuild.

It takes very little effort to screw this up, then you end up with a bike that doesn't run. :devil:

 

http://ktmdirtquestions.com/how-to-adjust-ktm-125-150-power-valve/

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