I have a Murray rear-engine riding lawn mower with a Briggs & Stratton 875 Series (190 cc) electric start engine. When cold, the mower starts up first try and runs well. After a few minutes, it begins to sputter and dies shortly afterwards. It begins smoking pretty bad as it is sputtering/dying. It does start back up after a few tries, but it immediately begins smoking and sputtering and then dies. I have tried running it without the air filter with no change.
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Several things could be the cause with your limited explanation of the symptoms. To further refine things, you should do the following:
-check the spark plug and describe what it looks like
-check the oil and describe it's looks and level
-do you smell gas after the shutdown
-how long until it starts again, and what is the engine temp when it starts?
mongo
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