jettinga stoc 400ex

[The Quad Kid]

I need to know how to jet a 400ex from stock to putting a K&N air filter on and a CMH exhaust on my fourwheeler can anyone help me? what i have to do to my carbureutor

[400exrider707]

Lid or no lid? If no lid then start with a 155 main, 40 pilot, and move the clip on the needle down one position. These obviously might not be perfect, but are good starting points, you will have to fine tune it from there.

[The Quad Kid]

bump does anyone have some instructions they could send me or somethin be cause i work well with directions in pictures thanks

ps i don't know squat about the deal

[ZSK]

This is how I learned. It's very easy after you do it a couple times.

http://www.atvriders.com/articles/pilotjet.html