Adjusting the valve clearances on my 2009 Suzuki TU250x. Step 2 link www.youtube.com This shows removal of the seat bolts. 12mm socket. Please LIKE & COMMENT if you like my tutorial This was taken 2 months ago. These days with a Rifle Sport Fairing to make it more aerodynamic and a 16 tooth sprocket, I'm averaging 75-78 mpg and most of the time I'm doing about 70-80 mph. This bike is awesome and super fun to ride, not to mention I actually smile every time I turn into a gas station.