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  1. #1
    Gold Member
    Join Date
    May 2006
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    267
    Location
    Austin, Texas
    Tractor
    Kabota 7500DT

    Default Stop fuel line slip off very small hose barb ?

    I have a gas powered Troybuilt string trimmer and had to replace the rotted neoprene fuel line which is maybe 1/8 inch o.d.and maybe 1/16 or 3/32 i.d.. The fuel line push fits onto a conventional small hose barb on the carb.
    Problem is the i.d. of the replacement fuel line is a TINY bit bigger than the hose barb which is maybe 1/2 inch long. The replacement line slides on and off the barb fairly easily. Although I'm not sure it actually leaks I'm sure it will before long or will eventually pull off easily.
    Can someone suggest a way to get a tighter fit ? I doubt there is even a model airplane hose clamp that small. I was going to wrap the barb with a wrap of electrical tape but thought it would corrode from the gas and would destroy the retaining effect of the barbs.
    Is there some sort of glue or epoxy sealant I could put on the barb that is resistant to gas and would adhere to the metal barb and the neoprene line ?
    I don't think I can find a slightly smaller fuel line or if I could I wonder if the gas flow through it would be sufficient.
    Any suggestions would be very much appreciated.

    Bob
    Farmer Bob
    Kubota 7500DST w/FEL,box blade,posthole digger,brush hog

  2. #2
    Gold Member
    Join Date
    May 2006
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    267
    Location
    Austin, Texas
    Tractor
    Kabota 7500DT

    Default Re: Stop fuel line slip off very small hose barb ?

    Correction- its not even a hose barb, just a small smooth 3/8 inch little metal tube that the fuel line is supposed to slide onto and be retained. So obviously for proper retention the fuel line i.d. is supposed to be slightly smaller than the tubes o.d. But I can only find replacement line whose i.d. is exactly the same as the o.d. of the metal tube, so it falls off with the slightest movement. Grrrrr.
    Farmer Bob
    Kubota 7500DST w/FEL,box blade,posthole digger,brush hog

  3. #3
    Gold Member
    Join Date
    Jun 2011
    Posts
    269

    Default Re: Stop fuel line slip off very small hose barb ?

    JB Weld ??

  4. #4
    Member Tommy V's Avatar
    Join Date
    Feb 2007
    Posts
    36
    Location
    New Berlin, WI
    Tractor
    BX24TLB

    Default Re: Stop fuel line slip off very small hose barb ?

    Use a small cable tie.

  5. #5
    Silver Member
    Join Date
    Apr 2009
    Posts
    151

    Default Re: Stop fuel line slip off very small hose barb ?

    steel wire wrapped around the hose and then twisted tight.

  6. #6
    Platinum Member Big Wave D's Avatar
    Join Date
    May 2010
    Posts
    527
    Tractor
    Kubota L35, Kubota B6200E

    Default Re: Stop fuel line slip off very small hose barb ?

    2nd, using a small zip tie.

  7. #7
    Platinum Member
    Join Date
    Feb 2011
    Posts
    828
    Tractor
    Furakawa 351

    Default Re: Stop fuel line slip off very small hose barb ?

    They make a multitude of different fuel line sizes, and you want to get the right one to fit properly. I had a Weed eater and it had a bastard size hose. I finally found a guy that did a lot of repairs and had the right hose.
    They make a metric and a standard size hose, and close does not work.

  8. #8
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
    Posts
    17,342
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST
    J.J.

    When I works, I works hard. When I sits and thinks, I goes to sleep.

    Git er done.

  9. #9
    Gold Member
    Join Date
    May 2006
    Posts
    267
    Location
    Austin, Texas
    Tractor
    Kabota 7500DT

    Default Re: Stop fuel line slip off very small hose barb ?

    Wow ! Thanks for taking the time and all the responses and options from JB Weld to ziplocks to twisted wire to another i.d. fuel line that actually fits ! And I had no idea the neoprene fuel lines came in so many dimensions ! I'm sure any one of these solutions will do the trick. Thanks again, I'm really grateful.

    Bob
    Farmer Bob
    Kubota 7500DST w/FEL,box blade,posthole digger,brush hog

  10. #10
    Veteran Member
    Join Date
    Apr 2011
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    2,406
    Location
    St. Cloud MN
    Tractor
    Deere 4100

    Default

    Slide a larger hose over the end of your small hose and then use a small hose clamp. Or several pieces that are sliced longitudinally, one over the other, so they can squeeze down.

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