fuel screw

2 replies to this topic
  • pbviking

Posted June 18, 2009 - 08:17 PM


hey all,
got a question regarding the fuel screw. I was told you can use the fuel screw to adjust to high altitude without changing the main jet. so this true also which way would you turn to lean the bike?

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • William1

Posted June 19, 2009 - 03:17 AM


Fuel screw is for idle only. To lean it, you would screw it in.

You still have to deal with a main jet and needle and needle clip position for altitude changes.

  • grayracer513

Posted June 19, 2009 - 07:58 AM


Realistically, a YZ450 can run well with the same jetting through a 4000 foot range.

Related Content


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.