How to repair plastic gas tank?

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  #1  
Old 09-03-10, 01:10 PM
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How to repair plastic gas tank?

I have a lawnboy model 10301.It has a plastic gas tank and shroud. The bottom of the tank has a leak.Can it be repaired? I have been looking for a replacement tank but i havent found one yet.It is a 1973 model 10301.Thanks.
 
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  #2  
Old 09-03-10, 10:18 PM
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Repairing a plastic gas tank is not recommended and I doubt you'll get any advice on how to, since it can be difficult and poses a risk if it leaks. There is no "proper" way to fix one other than to replace it. Have you checked ebay or your local small engine shops? Sometimes they have old mowers they rob parts from.
 
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Old 09-04-10, 09:55 AM
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What's the nature of the leak? Repairs to a puncture would be different than a crack.
 
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Old 09-04-10, 04:40 PM
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How to fix a leaky plastic gas tanka?

Its more like a crack several inches long right in the middle of the bottom of the plastic tank.Thanks for your help.
 
  #5  
Old 09-04-10, 05:42 PM
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I thought I answered this last night, guess I didn't hit send or something. It can be done and can be very dangerous and is not recommended, however, your model number shows the mower to be a 93 and the tank is available. Ok, you need a pencil type soldering iron and some like kind plastic, trim off some of the tank shroud, trimmer line, dull paint can lids, whatever, it needs to be a non shiny, flexy plastic. Rinse the tank with soap and water several times and let it air dry, then before trying to weld it put a lit match to the tank opening to see if it will foof to get rid of any fumes. Now with your plastic strips in hand start a melting pool just outside of the damaged area in a small circular motion, now introduce your welding rods and slowly cover the damaged area, melting the damage and filling the area with the new plastic, when finished, fill with water to see if it leaks, if it does, redo the leaks. Have a good one. Geo
 
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Old 09-04-10, 09:06 PM
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Repairing a crack in lawnboy gas tank

Thank you very much for replying to my post.I sorry that i didnt receive your first answer.I will try my local dealer for a used one.Ive already tried ebay for used parts but i couldnt find one. Again thanks.
 
  #7  
Old 09-09-10, 10:50 AM
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I have "welded" plastic as described above, but never on a gas tank. With a crack as long as you describe, I'd DEFINITELY look for a new replacement since it's available.
 
  #8  
Old 09-09-10, 07:09 PM
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repairing plastic gas tank

I sanded it down used rubbing alcahol to clean up and used J-B weld on it.I fillled it up with water first and it didnt leak. I now have gas in it and it started right off and so far ok.
 
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Old 09-09-10, 07:22 PM
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Good luck, I don't think it will hold but I hope it does, if it doesn't you can always weld it. Have a good one. Geo
 
  #10  
Old 09-09-10, 07:52 PM
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repairing a plastic gas tank

Thanks very much for your help. I can always buy a new one as long as they are available.
 
  #11  
Old 04-19-11, 03:08 PM
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Isn't there any kind of glue that will work on a crack on the bottom of the tank. I also have a 2" crack in the center bottom of my tank on a poulan pro PR20PH42 rider. A tank for this thing cost over $50 and I'm not ready to spend that on an old mower, even if it does still run good.
 
  #12  
Old 04-19-11, 04:15 PM
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Originally Posted by bowace View Post
Isn't there any kind of glue that will work on a crack on the bottom of the tank. I also have a 2" crack in the center bottom of my tank on a poulan pro PR20PH42 rider. A tank for this thing cost over $50 and I'm not ready to spend that on an old mower, even if it does still run good.
I tried several different glues and epoxy, none of them worked for me, my leak was at a seam and maybe I didn't get it clean enough, try the glue, you can always try the weld if the glue doesn't work. Have a good one. Geo
 
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