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  1. #1

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    Plastic tank fix

    IMG_20191105_151253.jpg
    any fixes for a hairline crack in a gas tank? Plastic.
    Briggs 12H802
    Thought about JB Weld, but need something gasoline proof.
    TIA
    I know enough to be dangerous

  2. #2

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    Re: Plastic tank fix

    Tank will be HDPE so most glues & fillers will not work
    Get some HDPE filler rod and weld the crack using a brand new soldering iron tip or hot air gun.
    Note the surfaces must be KLEAN with a capital K.

    Hundreds of vids on tank welding but the magic word is clean.
    When any clean plastic surfaces come into contact & are heated they will weld together.Down here is use plastic milk bottles and a hot air gun.
    Done dozens of JD 100 series tanks.

  3. #3

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    Re: Plastic tank fix

    Thanks bert!
    I know enough to be dangerous

  4. #4

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    Re: Plastic tank fix

    I had a crack on my former rider. I roughed up the crack w/sandpape & did use JB Weld, & ordered a New Tank.

    Well the JB Weld (Original formula) worked so well that when new tank came & I never installed it, In fact I just sold it here. That mower is still running with repaired tank on it.

    Point is, in my case the JB Weld worked great. I did add a stiffening brace to mounting pads on that mower, which is what caused the crack to begin with.
    Buddy.......... My Kawasaki FR to FX Air Box mod https://www.lawnmowerforum.com/showt...box-conversion


  5. #5

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    Re: Plastic tank fix

    I might try JB weld first and see how it holds up.
    I trust your opinion more Buddy than a few yay-hoos on youtube
    I know enough to be dangerous

  6. #6

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    Re: Plastic tank fix

    Thanks Scrubcadet. As Bert said Klean is the key.
    Buddy.......... My Kawasaki FR to FX Air Box mod https://www.lawnmowerforum.com/showt...box-conversion


  7. #7

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    Re: Plastic tank fix

    Quote Originally Posted by 7394 View Post
    Thanks Scrubcadet. As Bert said Klean is the key.
    Clean won't do?
    What if it's CClean? With two c's?
    I might run down to The Tractor supply store tomorrow and get some JB weld
    I know enough to be dangerous

  8. #8

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    Re: Plastic tank fix

    Once you put any goo on the crack it can never be welded.
    If the JB does not hold then you will need to cut all of the JB out and fit a patch piece which is a lot harder than welding the crack, filing it down then covering with a piece of milk bottle.
    Your tank so your decision.

  9. #9

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    Re: Plastic tank fix

    Went and bought some JB weld. Says on the package "resists gasoline and most automotive chemicals"
    Haven't put it on yet.

    I'll either be saying "Thanks Buddy" or
    "Bert...you were right"

    I know enough to be dangerous

  10. #10

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    Re: Plastic tank fix

    My experience was very positive using JB Weld (Original formula), NOT the 5 minute quick stuff.
    Buddy.......... My Kawasaki FR to FX Air Box mod https://www.lawnmowerforum.com/showt...box-conversion


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