can the Stihl MS291 handle 3/8 Chain

9oldenSaw

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Dec 13, 2025
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planning to snag a couple of Stihl MS291 saws for Christmas presents!
I was wondering if anyone has upgraded one of these to a 3/8 chain with a 0.050 gauge?
Specifically, how well does the MS291 perform as a firewood saw out here in the Pacific Northwest when pulling a 3/8 full comp chisel chain? Is it worth the upgrade?
 
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I can't remember if 029s came new with .325 25 years ago but if they did, I've probably converted 50 of them to 3/8. Not sure if Stihl considered that a home use standard to put them out that way but it was generally considered a step up to convert to 3/8, more of a professional use upgrade. They handle it just fine on an 18" bar. And thats on predominantly hardwoods in the Midwest.
 
That’s good to hear. Sounds like the 291 will handle it just fine.
 
It will handle it , of course. Once again we’re trying to reinvent the wheel.
Standard.325 pitch chain has a lower profile, takes less kerf therefore should cut a bit faster. If you’re intent on going 3/8, try Stihl’s 3/8 PS chain. It’s full chisel and Lo profile.
I even run it on my 034 super.
 
Solid point, keeping it simple makes the choice clear.
 
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