engine has gas in cylinder

[Kfred92]

I recently acquired a lawn tractor with a 12.5 hp Briggs and Stratton engine. When I got the mower it had gas mixed in with the oil so I drained it, and put fresh oil in. I checked the float in the carburater and it wasn't stuck. So I put it back together and mower ran for a little while then went to turn it over and it was just puffing out smoking from the muffler. I then saw gas dripping out of the valve plate so I'm guessing gas is in the cylinder again. How does this happen and how do you fix it?

 

[Rivets]

More than likely the float needle is not seating properly. If you replace the needle and seat, you should solve your problem.

 

[KennyV]

If the problem continues after doing as Rivets suggested... put a fuel shut off in the fuel line between the tank and the carb... then when you turn the engine off Also turn the fuel off... :smile:KennyV

 

[Kfred92]

Thanks, is the needle and seat inexpensive?

 

[Rivets]

Yes, just take your model and type numbers to your repair shop and you'll be in business.