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gas in oil resevoir?

I checked the oil in my 12 hp briggs & stratton rider motor,there was alot of gas in it. I drained the oil and it was 1 part oil and 99 percent gas. What is the problem, and how do I fix It. I heard that the rings on the piston need replaced. Is this all. Thanks for your help.

Les Bowman
November 2007

Briggs & Stratton Garden Tools, Lawn Mowers Oil Checked Briggs

Well its not the rings ..the only way gas can get to the oil is thru the carb ..you proably have a needle and seat problem letting gas over flow while it sits and drain into the oil chamber
I had the same problem it was fine until I let it sit up for a week or so then there would be gas in the oil ......I just put a gas turn off vavle in fuel line and it fixed my problem ....good luck

bg
November 2007

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