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Gas seeping into oil?

I have a riding mower with a 12.5 horsepower Briggs and Stratton engine. I have gasoline seeping into the oil. Can someone please tell me what is causing this?? Thanks....

thunderrider
March 2010

Briggs & Stratton Garden Tools, Lawn Mowers Horsepower Briggs Stratton

a fast and simple fix is to install a gas shut off
they sold them at lowes it goes in line from the main fuel line to the carb just shut the gass off ehrn your not using it and turn it on when you use it...

nathan
April 2010

Carb inlet needle leaking, fuel entering the engine via the inlet valve, or crankcase breather

Husqvarna man
March 2010

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