I got a deal on one of those MTD mowers with the B&S engine on it but there was an ill fitting plastic panel on top of the motor that would hit the side of the fuel tank whenever i ran over a tree root....sure enuf a hairline crack has appeared which has left me with a small fuel leak (unless i keep the level below the crack and fill up often, which is frustrating!) Any suggestions on a product I could use to fill the crack? Need something nonreactive to gas obviously...I tried superglue gel for the heck of it, no luck.

thanks dudes

 

couple products, j-b weld for plastic, "plumbers goop"(a true brand name), etc available at ace, true-value. i've used both with great results

 

What to use depends on what type of plastic you have. I once tried JB weld on a polypropylene gas tank (same plastic they make squeezable heintz bottles from) and it doesn't last; the glue doesn't "bite". Now if you have ABS you will be in luck. I think what you might want to do is try a dab of ABS and PVC glue in a few inconspicuous places (no, not on the crack yet) then after it dries see if you can pick the stuff off.

 

I recently fixed a crack in my muarry gas tank using jbweld. Scuff up the area of the crack with sandpaper. Clean the area real good with acetone and apply jbweld. I did this at the start of the summer and has not leaked for a couple of months.

 

If it is under 2yrs old it is covered by warranty I have replaced a bunch of them already,they split right at the seem and leak above half full most of the time,but I have seen a few that leaked in a differant spots also just something wrong with the plastic there made from as I have not had a problem with tanks built before 03-04 code dates.If you want to PM me I can help a little more I am a Briggs warranty dealer.