Fuel Mixture Screw 3 Turns Out?

2 replies to this topic
  • jams229

Posted August 28, 2007 - 05:12 PM


I own a 2007 WR450. The directions from the AIS kit tell me to use the stock main jet 162 and a 48 Pilot with the mixture screw 3 turns out.
It runs great. My question is this: Should I go one up on the main or the pilot to get to the optimum of 1-2 turns out on the mixture screw?
I have always heard that if you have to turn the screw out 3 turns, you need to go one up on either the main of the pilot. Can someone please clarify this?
Thanks a lot.

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

Posted August 28, 2007 - 05:31 PM



  • GCannon

Posted August 29, 2007 - 08:24 AM


UP the pilot. You may also look for a vacuum leak since you have been messing around with the AIS. a vacuum leak will cause it to be lean at idle. check the system carfully before changing the pilot jet.


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.