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Coleman UT400 gas leak


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I have a fairly new UT400 bought from Tractor Supply in November 2021.  I am second owner and have had it only for a couple of days.  It has 15 hours on it.  I just filled the tank all the way the other day and drove it around a bit.  Last night it started leaking gas all over the garage floor.  This thing still looks brand new and has not been driven hard by me.  I do hear a bit more rattling than I would like but otherwise starts and runs great.  Any ideas why it would start leaking  underneath the chassis? 

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