air mixture screw

1 reply to this topic
  • adroncoyote

Posted March 25, 2007 - 11:23 AM


I have a '98 YZ 400 w/ white bros. exhaust. Not sure if its been re-jetted. What's a good starting point on the air mixture screw? How many turns out?

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted March 25, 2007 - 12:37 PM


It's a fuel mixture screw, so it works backward of a pilot air screw; out is richer, in is leaner. Start at 2 turns and work with it.

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.