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Main Jet spinning in emulsion tube

Discussion in 'XJ Technical Chat' started by Jordanxj700, Jan 22, 2017.

  1. Jordanxj700

    Jordanxj700 New Member

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    Hi I'm having a problem with removing the main jets on 2 of my 4 hitachi hsc33 carbs. The main jet is spinning in the tube underneath. Is there any way to get these apart. The carbs were very dirty. Have heard a lot of problems caused by those tubes being clogged. Anyone that has seen this before any help would be appreciated.
     
    Jordanxj700, Jan 22, 2017
    #1
  2. k-moe

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

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    Use your finger to hold the emusion tube still at the carb-throat end (you should remove the top-hat and slide if you have not done so already). The jet really shouldn't be able to spin the tube since it's what locks the tube into place, but a if the tube has a loose fit...
     
    k-moe, Jan 22, 2017
    #2
  3. Jordanxj700

    Jordanxj700 New Member

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    Okay thanks I will try that see if it works. I tried grabbing the copper washer gently with a pair of vise grips but the jet would not come loose. Just spinning with the tube underneath.
     
    Jordanxj700, Jan 22, 2017
    #3
  4. k-moe

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

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    I wantsome clarity. When it spins, that's happening while you are using a screwdriver to unscrew the jet; is that correct?
     
    k-moe, Jan 22, 2017
    #4
  5. Timbox

    Timbox Well-Known Member

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    Sounds like the emulsion tube is so loose it is dropping away from the "key" and turning. Lets hope the emulsion tube is not stripped and spinning past the key. Adding pressure from the air intake side of the emulsion tube while unscrewing should take care of that, as stated by others.
     
    Timbox, Jan 23, 2017
    #5
  6. k-moe

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

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    The emulsion tube has no key, or other indexing/locking device. It is held by a friction fit.
     
    k-moe, Jan 23, 2017
    #6
  7. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    Mikuni carb emulsion tubes are "keyed"............
     
    chacal, Jan 23, 2017
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  8. k-moe

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

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    Unless he's mistaken about what carbs he's working on (does occasionally happen).
     
    k-moe, Jan 23, 2017
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  9. hogfiddles

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

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    If it's for the bike in his avatar, which is a 700 airhead, then he has Hitachi carbs
     
    hogfiddles, Jan 23, 2017
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  10. Rice_Burnarr

    Rice_Burnarr Member

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    What chacal said is correct............
     
    Rice_Burnarr, Jan 24, 2017
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  11. k-moe

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

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    Yes it is, but based on what the OP posted, and what bike is in his avatar, those are not the carbs the OP is working on.
     
    k-moe, Jan 24, 2017
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  12. Rice_Burnarr

    Rice_Burnarr Member

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    So then we're all in agreement. :)
     
    Rice_Burnarr, Jan 24, 2017
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    hogfiddles and k-moe like this.
  13. k-moe

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

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    Yep :)
     
    k-moe, Jan 24, 2017
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  14. hogfiddles

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

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    We're ALWAYS in agreement here........
     
    hogfiddles, Jan 24, 2017
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  15. Rice_Burnarr

    Rice_Burnarr Member

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    What hogfiddles said is correct............
     
    Rice_Burnarr, Jan 25, 2017
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  16. MattiThundrrr

    MattiThundrrr Not a guru

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    I disagree. With everything.

    Chacal was first to mention mikunis. He's prolly right about them, but the info doesn't apply to OP's question .
     
    MattiThundrrr, Jan 27, 2017
    #16

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