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Different types of mikuni pilot fuel jets?

Discussion in 'XJ Technical Chat' started by broberg, Jul 8, 2013.

  1. broberg

    broberg Member

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    I went to my local Yamaha dealer today and browsed through their mikuni jets, I found the correct size and numbers for the main fuel jet, but the pilot fuel jet was a different story.

    The outer dimensions was the same but the hole in the pilot jet was 2 times the size of the one I had in the carbs (comparing the same numbers) and their pilot jets also had holes on the side of the jet body.

    I'm utterly confused!
     
  2. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Those were for different Mikunis, betcha.
     
  3. RickCoMatic

    RickCoMatic Well-Known Member

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    When you look at Jets, ... bring a Magnifying Glass.

    The Size of the Jet is "Engraved or Laser Etched" right on the Top of Main Jets and on the Barrel of Pilot Jets.
     
  4. broberg

    broberg Member

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    I guess so to, but they looked otherwise identical, thats what got me thinking.
     
  5. broberg

    broberg Member

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    okey, found a good picture on google!

    [​IMG]

    What they had was for a BS carb, but for the larger ones :)
    ours is the N151.067
     

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