Yz Carb Needle

4 replies to this topic
  • Yamaster

Posted February 23, 2006 - 04:08 PM


Is there any difference between the wr and yz needle other than the yz is adjustable? The only thing I can imagine is that the yz needle might have different tapers and might be thinner to richen up the jetting. Am I right?

  • pkcof

Posted February 25, 2006 - 08:54 AM


Good question - I have often wondered the same thing and I look forward to someone posting an answer ... perhaps this may be a little too technical or no-one else has thought of this as an option?

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  • C-ya

Posted February 25, 2006 - 08:00 PM


My '99 WR400 has a YZ needle in it. It was in there when I bought it. I looked up the P/N for a WR and a YZ needle, and mine was marked as shown for a YZ. Yes, the YZ needle has more taper than a WR needle. I found a resource that gave the taper dimensions and they are different for the 2.

  • Yamaster

Posted February 26, 2006 - 11:21 AM


thanks for the info. Hopefully Ill get one on tuesday. The 450 pinging a bit and its poppin so I need to adjust.

  • C-ya

Posted February 27, 2006 - 09:37 AM


No prob. Good luck with it.


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