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Drill for pilot screw 'stub'

Discussion in 'XJ Technical Chat' started by a100man, Dec 4, 2015.

  1. a100man

    a100man Well-Known Member

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    Aaargh ! Second time I've done this. First time wasn't my fault but now I did it again (long story).
    Snapped the tiny pointy bit of the(Mikuni) pilot screw in the hole leading to the intake. Tried pushing it back out but the brass burrs over and makes a kind of rivet. Thinking I'll now drill down form teh top but it looks like I'll need a drill bit no bigger that 1mm. Anyone tried this ?
     
    a100man, Dec 4, 2015
    #1
  2. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Get at dental pick, or a thin needle. Put a 90º bend in the end (or use one that is pre-bent). Thake the carbs off of the bike. Look inside of the throat of the carb. Just above the throttle plate, about halfway back, you'll see the hole for the pilot air screw. Use the dental pick to push the broken end of the screw out.

    Now if that is what you've been doing, then don't frack around. Take it to a machine shop.
     
    k-moe, Dec 4, 2015
    #2
  3. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Contact listmember " mirco" . He is an outstanding machinist.

    Dave Fox
     
    hogfiddles, Dec 4, 2015
    #3
  4. Polock

    Polock Well-Known Member

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    try tapping it back and forth, if the "rivet" part breaks off you can try the dental pick again
    don't do that no more !
     
    Polock, Dec 4, 2015
    #4
  5. a100man

    a100man Well-Known Member

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    Yep, that's what I'm doing.. I think its giving (slowly) but by 'eck it's stuck fast !
    If it gets desperate I've a couple of contacts I can call upon if you don't advise diy drilling..
     
    a100man, Dec 5, 2015
    #5
  6. Sebastian Uhde

    Sebastian Uhde Member

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    Couldn't seem to locate him on here...
     
    Sebastian Uhde, Dec 29, 2015
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  7. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Just sent contact info to your cell phone
     
    hogfiddles, Dec 29, 2015
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  8. rocs82650

    rocs82650 Well-Known Member

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    rocs82650, Dec 29, 2015
    #8
  9. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Better late than never, Gary? Lol
     
    hogfiddles, Dec 29, 2015
    #9
  10. rocs82650

    rocs82650 Well-Known Member

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    I try to read the forums during my breaks at work. 2-10 minute and a 30 minute lunch doesn't allow for much typing. I read and reply when I get home and or once things settle. You know the drill. Lol.

    Gary H.
     
    rocs82650, Dec 29, 2015
    #10
  11. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    I know :) just funnin' with ya
     
    hogfiddles, Dec 29, 2015
    #11
  12. rocs82650

    rocs82650 Well-Known Member

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    :)!

    Gary H.
     
    rocs82650, Dec 30, 2015
    #12

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