My lawnmower is leaking gas!

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  #1  
Old 05-19-17, 09:01 AM
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My lawnmower is leaking gas!

It is a 10 year old Toro. It has been fine until last week. I filled it and it started leaking pretty seriously. I mowed the lawn quickly to try and use up the gasoline. When I was done, there was a third of a tank left and it wasn't leaking. Yesterday it was still a third of tank. I filled it and it leaked again; not as badly as the first time. It seemed to be coming from behind the air filter. Again there was third of tank left when I was done; and today it is still there.

So, where might it be leaking and how do I fix it?
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  #2  
Old 05-19-17, 09:26 AM
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Could be a cracked tank, a split hose, a loose hose clamp, loose fuel bowl on the carb, and probably other possibilities. Repair will depend on actual cause. You are going to have to disassemble it far enough to find exactly what is leaking. I'd start by removing the air cleaner housing since you say the leak seems to be behind that area.
 
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Old 05-19-17, 10:29 AM
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I agree. It's probably vibrated against something and rubbed a hole in the tank. Removing the tank should be fairly straightforward.
 
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Old 05-19-17, 11:23 AM
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I am betting behind the air filter you will find it leaking into the throat of the carb caused by a failing needle valve.
 
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Old 05-19-17, 11:50 AM
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Agreed, the leak is most likely a leaking needle in the carburetor. You'll probably need a new air filter too, as the old one is probably soaked with gas.
 
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