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


7 replies to this topic
  • blackdog9

Posted June 11, 2007 - 01:49 PM

#1

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

  • mcflzwr450f

Posted June 11, 2007 - 03:06 PM

#2

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

  • fitzy

Posted June 12, 2007 - 04:08 AM

#3

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

  • blackdog9

Posted June 12, 2007 - 10:50 AM

#4

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:

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  • Oasis_Flame

Posted June 14, 2007 - 12:50 PM

#5

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

  • msgbean

Posted June 14, 2007 - 07:15 PM

#6

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

  • blackdog9

Posted June 14, 2007 - 07:48 PM

#7

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


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

  • fitzy

Posted June 15, 2007 - 04:39 AM

#8

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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