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It needs to be replaced.

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Q: Why does gas leak from prime bulb on lawn mower?
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Exhaust leak possibly...


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Dirty or stuck open needle valve in carburetor.


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Inlet needle in carb sticking open; it runs in through the carb.


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When I prime my Ryobi trimmer the primer bulb contains a large amount of air and engine will only run 1 or 2 seconds?

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How do you find a leak in a boat?

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Why does my Lawn mower engine oil smell of petrol?

Is it a Craftsman? I have two of them and they are doing the very same thing. The carb is somehow allowing the gas to leak into the oil. When you start it up... does is smoke a lot? I fixed the issue by putting a on off valve in the gas line. Open it up when you are using the mower and turn it off when not in use. Problem was solved. However do check the oil occasionally