Question about 2000 Yamaha TT 600 R

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Yamaha Grizzly 600 leaking gas

This 4-wheeler was sitting in the garage, and had been so for like 3 yrs prior to me taking it out this last summer. It is leaking gas, it gets really hot and smells like gas, i had a friend clean the carborator because it was backfiring and running poorly, it was running better, but I am always putting gas in it, and the problem is getting worse. Any ideas on what the problem can be?

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  • lilgoober Jan 30, 2009

    yes it is leaking gas out of the carb overflow tube

  • joe May 11, 2010

    is it leaking gas out of the carb overflow tube (little tube attached to the carb that exits to the bottom of the vehicle)?

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If the carb was really cleaned out, then i would suspect the float is not set properly (where #14 in the pic meets #19, assuming it is adjustable), the float (#14) has a hole in it and is no longer "floating" which turns off fuel to the bowl when it raises #19 (needle valve) or the needle valve is not connected properly to the float (common problem when reassembling a carb.

http://partsfinder.onlinemicrofiche.com/atlanticcycleandpower/Yamaha_OEM/YamahaATV.asp?Type=18&A=268&B=11&Action=O

one way to check is to remove the float bowl and with your finger, push the float up (it pivots) and turn on the petcock. if fuel still pours out the needle valve, then the needle valve may not be connected properly to the float or the needle valve is worn. if it doesn't pour out, then i would replace the float as it is no longer floating (one way to also tell is if you see fuel inside the float if its plastic) to turn off fuel or adjust the float tang (assuming the float is brass. if its plastic, then there is no adjustment). good luck.

Posted on Jan 30, 2009

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Stuck flot valve in carb

Posted on Jan 29, 2009

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