I'm no mechanic ... I have a fast drip of oil coming out of this circular area...
it is next to the pan near the oil filter on my 273 .....
what is this thing called...can I tighten it up by wrenching the bolt on the end of the stem...?????

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it is next to the pan near the oil filter on my 273 .....
what is this thing called...can I tighten it up by wrenching the bolt on the end of the stem...?????

<center>
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</center>