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Common causes of leaking carb?

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Jim Carswell

01-18-2013 12:35:01

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When I turn on my fuel valve gas starts leaking out from somewhere behind the carb, tractor doesn't start. Before I start taking it apart is there anything I should be looking for specifically? It sat outside all summer - maybe the gaskets/seals dried up?


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01-19-2013 08:24:11

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 Re: Common causes of leaking carb? in reply to Jim Carswell, 01-18-2013 12:35:01  
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When you take it apart remove the pin which holds the float in place and gently lift out the float and give it a shake - if it is heavy or you hear liquid sloshing around inside then you have a pinhole leak in the float - if that is the case you can get the gas out and once dry clean the area out and see if you can re-solder it - I was successful doing that to mine.


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L. B,

01-19-2013 01:19:58

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 Re: Common causes of leaking carb? in reply to Jim Carswell, 01-18-2013 12:35:01  
Take it apart it needs service at this point anyway, 5 mins time and ya should have a idea.

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01-18-2013 15:23:48

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 Re: Common causes of leaking carb? in reply to Jim Carswell, 01-18-2013 12:35:01  
You say carb leaks from behind sounds like a bad or dried up carb gasket. But also as Dean said and may have a float sticking and since it sat a long time maybe ever very rusty in side which will cause odd problems

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01-18-2013 12:54:11

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 Re: Common causes of leaking carb? in reply to Jim Carswell, 01-18-2013 12:35:01  
Fuel leaking from the carburetor when the fuel valve is opened is usually caused by failure of the float valve system. This can be a sticking, or damaged float assembly, loose float valve seat, damaged float valve needle, dirt in the float valve, etc.


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