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Old 07-05-2012, 09:48 PM
cvcook cvcook is offline
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How can I fix Small crack in 21" Exmark plastic gas tank, what to do?

The crack is in the bottom. It's the tank that's mounted away from the engine
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Old 07-05-2012, 09:52 PM
ecurbthims ecurbthims is offline
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seal-all is something that has worked for me in the past
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Old 07-05-2012, 09:58 PM
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Patriot Services Patriot Services is online now
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Wash the tank thoroughly with soap and water. Some plastics can be welded with flat tip soldering iron.
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Old 07-05-2012, 11:30 PM
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Get Some... Get Some... is offline
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Take it off and turn upside down, clean then apply jbweld.
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Old 07-05-2012, 11:37 PM
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Synergy Ground Synergy Ground is offline
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Dont remember who makes it, but there's a product out there similar to JB Weld but for plastic. We used it on a plastic diesel tank, worked perfect and still holding.
Check your local NAPA, Autozone, Etc.... look around the JB Weld products and you will find it.
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  #6  
Old 07-06-2012, 02:27 AM
Antiskell Antiskell is offline
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Buy a new gas tank
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Exmark Z 60" w/ ultravac
Exmark Z 60"
Exmark Z 56" triton W/ ultra vac
4 echo Pas 266 with 2 of everything
3 echo srm 230 whackers
Echo 330t 12" 341t 12", 400 18", 440 16", 550 20", 6000 36". Husky unknown frankenstein 32" that could chip the terminator!
Echo PPT 280
3 echo pb 770t
2 echo pb 755t
4 echo hc 165
2 echo hc 185
And...... 1 1980s snapper hi vac i found in a trash heap that only needed a spark plug.....still running strong with a little duct tape and silly putty!
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  #7  
Old 07-06-2012, 06:51 AM
DEPENDABLE LANDSCAPING DEPENDABLE LANDSCAPING is offline
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We used regular jb weld on one of our scag tanks that believe it or not got stabbed with a pitchfork inside our enclosed trailer while driving! 4 years ago and its still fine.
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  #8  
Old 07-06-2012, 10:55 AM
orangemower orangemower is offline
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Quote:
Originally Posted by Antiskell View Post
Buy a new gas tank
You have my vote. Replace the tank.

Quote:
Originally Posted by DEPENDABLE LANDSCAPING View Post
We used regular jb weld on one of our scag tanks that believe it or not got stabbed with a pitchfork inside our enclosed trailer while driving! 4 years ago and its still fine.
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How in the heck could the weight of a pitch fork stab through a hard plastic fuel tank? The only way I could see that happening is if the mower was not secured and it bounced around and hit the pitch fork. Always keep mowers secured regardless of open or enclosed trailer.
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  #9  
Old 07-06-2012, 12:40 PM
Bashby Bashby is offline
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Quote:
Originally Posted by Get Some... View Post
Take it off and turn upside down, clean then apply jbweld.
I like jb quick, sets up faster. Be sure to scuff the area well with 80 grit or it won't stick
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  #10  
Old 07-06-2012, 12:47 PM
macgyver_GA macgyver_GA is offline
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The same thing happend to the tank on my Snapper pro walk behind about 3 weeks ago. It developed a small hairline crack at the bottom where the strap is.

First, I tried normal epoxy, that lasted 24 hours then peeled off from the fuel seeping through.

Then I tried the 6 minute set JB weld, that held about a week then started leaking again and the JB weld peeled off.

About a week ago, I took the tank off again. Cleaned it really well with dish soap and water, then "plastic welded" it a little with the soldering iron, then sanded it with some sand paper, then wiped it with acetone, then put two coats of JB weld on it. So far, it's been holding. I was trying to avoid buying a $75 replacement gas tank if I could.
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