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There should be a screw that is inside the bar and with the head at the front of the machine. It shares the pin to push the bar with the 041

I own a 031 and it has a different way to adjust the chain/bar. Between the two nuts that hold the bar tight, there is a recessed screw. First loosen the two nuts alittle and then turn the recessed screw - clockwise to tighten. It is something new to me also. I don't know how long Stihl has been using this?

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14y ago
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Q: Is there a chain tensioner on your Stihl 031 AV?
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