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The float valve in the carburetor is not working properly. You will need to remove the carburetor and clean it or replace it.

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Q: What causes gas to leak into cylinder of 18HP Kohler on Craftsman lawn tractor?
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What causes Craftsman Lawn Tractor engine to die when it gets hot and restart after it cools down?

I have a Sears Craftsman LT 1000 17 Horsepower Kohler engine, and I had the same problem. I used some gasoline additive as well, check your oil level. It appears if the oil level is low the engine heats up and shuts down. I believe it is a safety mechanism, so it saves your engine. So add some oil, maybe a little gasoline additive and you should be good to go!


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