2007 Wr 450 Carb Needle Position...help!!

TODAY WE ARE TAKING APART THE CARB...WE`RE REPLACING NEEDLE AND JETS (A KIT WAS ENCLOSED ALONG WITH MANUAL AND OTHER THINGS..)

MY QUESTION... ALL THE JETS SHOULD BE REPLACED?

¿WHAT POSITION SHOULD THE NEEDLE BE SET???:thumbsup:

THANKS IN ADVANCE.

SERGIO

I used the JDJETTING kit, if you go to there site they have all kinds of jetting specs. jdjetting.com

Second slot from the top, if your airbox and free mods are done:thumbsup:

Second slot from the top, if your airbox and free mods are done:thumbsup:

Done!!!! All free mods done. Tomorrow will be testing.

Thanks:thumbsup:

2nd. from top is too lean buddy. 3rd. or 4th is needed, trust me.

The AIS removal kit from Yamaha says put it in the 4th position from the top.

The AIS removal kit from Yamaha says put it in the 4th position from the top.

AS you said.....set in 4th slot.

Thanks

2nd. from top is too lean buddy. 3rd. or 4th is needed, trust me.

I'm at sea level and this is fine. If you want a lot of grunt and bad fuel eccon 3 or 4th. If you want good economy and snap go 2

Give both a try and see which you like best. Thats what I did and 2 is sweet and not lean:thumbsup:

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