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Old 09-10-2019, 03:02 PM   #1
SoTxHunter
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Default Cracked Kawasaki mule gas tank

Does anyone know what I can use to patch up a plastic gas tank? Would JB Weld work? A new tank is over $300 and was wondering if any of you had experience with fixing a leaking plastic fuel tank.

Thanks
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Old 09-10-2019, 03:05 PM   #2
duckmanep
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have you tried this... I mean, he says it is "like the hoover dam in a can!"

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Old 09-10-2019, 03:10 PM   #3
Ginja Ninja
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Quote:
Originally Posted by duckmanep View Post
have you tried this... I mean, he says it is "like the hoover dam in a can!"

Flex Seal® Screen Door in a Boat Commercial | Flex Seal® - YouTube
Fair question.
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Old 09-10-2019, 03:14 PM   #4
Mud Shark
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JB Weld will work, but make sure you get the one for plastics/polymers.
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Old 09-10-2019, 03:18 PM   #5
SoTxHunter
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Yeah I dont know about that Flex Seal. Lol
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Old 09-10-2019, 03:18 PM   #6
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Won't stand up to gasoline.
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Old 09-10-2019, 03:20 PM   #7
SoTxHunter
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Quote:
Originally Posted by Mud Shark View Post
JB Weld will work, but make sure you get the one for plastics/polymers.
Will the gas eventually eat through it? Or that should do it? Man, taking that little gas tank out from under the seat was a pain.
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Old 09-10-2019, 03:22 PM   #8
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Youtube using a soldering iron to reheat the tank and melt the crack together.
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Old 09-10-2019, 03:25 PM   #9
hog_down
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Try this: https://www.google.com/shopping/prod...RL5BccQ8gIIvgM
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Old 09-10-2019, 03:26 PM   #10
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OPs tank is plastic
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Old 09-10-2019, 03:26 PM   #11
6.5 shooter
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You can buy a gas tank repair kit at the auto parts store. Works with plastic or steel.
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Old 09-10-2019, 03:36 PM   #12
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save yourself a lot of head aches just get a new tank
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Old 09-10-2019, 03:40 PM   #13
Sackett
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Quote:
Originally Posted by mudkat View Post
save yourself a lot of head aches just get a new tank
This right here! I ran a mesquite stump up through my plastic tank in my ranger and tried plastic weld epoxy, heat gun and hpde plastic weld, etc. And none worked. Found a tank on ebay for 1/5th cost from factory.
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Old 09-10-2019, 03:46 PM   #14
DWC
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I put flex seal tape on my gas tank hose about 6 months ago ... still no leaks

Granted it only sees gas when I am putting gas in the tank ... not sure if it would hold up if it was on the tank itself

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Old 09-10-2019, 03:48 PM   #15
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Quote:
Originally Posted by mudkat View Post
save yourself a lot of head aches just get a new tank
Probably the best answer right here. Unless the crack is at the top of the tank, the glues and epoxy never hold up.
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Old 09-10-2019, 03:49 PM   #16
Goldeneagle
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Quote:
Originally Posted by Razorback01 View Post
Youtube using a soldering iron to reheat the tank and melt the crack together.
I've done this on a riding lawn mower tank. Worked like a champ.
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Old 09-10-2019, 03:51 PM   #17
av.carrera
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Harbor freight plastic welder about $20 used to fix dashes and door panels.
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Old 09-10-2019, 03:51 PM   #18
TXBRASS
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Half price on ebay and free shipping



https://www.ebay.com/itm/Kawasaki-Mu...4AAOSw-phcp5s4
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Old 09-10-2019, 04:07 PM   #19
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Quote:
Originally Posted by av.carrera View Post
Harbor freight plastic welder about $20 used to fix dashes and door panels.


Do these actual work ? My plastics on my mule are cracked up.
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Old 09-10-2019, 04:22 PM   #20
av.carrera
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Yea they work good I use it all the time to fix boken plastic that is not available for older vehicals. lots of videos on you tube.
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Old 09-10-2019, 04:25 PM   #21
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Quote:
Originally Posted by av.carrera View Post
Harbor freight plastic welder about $20 used to fix dashes and door panels.
This, have repaired many plastic gas tanks and plastic radiators. Good permanent fix. Good to have around.
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Old 09-10-2019, 04:26 PM   #22
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Quote:
Originally Posted by Strummer View Post
Do these actual work ? My plastics on my mule are cracked up.
Works great on atv fenders.
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Old 09-10-2019, 04:39 PM   #23
D buckhunter
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I used JB weird on my Prairie 650 tank 8 years ago and its still holding. Oversized tires wore a hole in the side of the tank.
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Old 09-10-2019, 08:42 PM   #24
SoTxHunter
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So Ill try the Harbor Freights one or JB weld one. Its worth the try before I purchase a new one. I just wont screw the tank on. Also the crack is right where one of those screw brackets is!


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Old 09-10-2019, 11:23 PM   #25
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Buy some Seal All glue. Rough up the area around the crack with big grit sand paper and run a bead of glue over it. Next day run another bead over the first but spread it wider than the first. I've fixed lawn mowe and utv tanks with it and they have lasted for years.
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Old 09-11-2019, 04:10 PM   #26
SoTxHunter
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Quote:
Originally Posted by Draco View Post
Buy some Seal All glue. Rough up the area around the crack with big grit sand paper and run a bead of glue over it. Next day run another bead over the first but spread it wider than the first. I've fixed lawn mowe and utv tanks with it and they have lasted for years.
Thanks---I am more than willing to try that
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Old 09-19-2019, 12:33 PM   #27
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Quote:
Originally Posted by SoTxHunter View Post
Will the gas eventually eat through it? Or that should do it? Man, taking that little gas tank out from under the seat was a pain.
I've used it on the gas plastic gas tank in my bass boat a few years ago, because i poked holes in it when putting in new seats. It's been air tight ever since. Can't say how long it will last though.
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Old 09-19-2019, 12:55 PM   #28
dclifton
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Ive used JB weld on a chainsaw tank before and it worked good. The gas tank was in the front and the chain came of and nicked a hole in it. i sanded it out with a buff pad and JB welded it. Its the only thing that held up.
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