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I would have recommended the Stihl, if he prefers Stihl. It tends to work out better that way. The 590 could very likely end up with carb issues, but knowing what I know, I'd choose the 590. As far as I know, only Stihl carbs compensate for a dirty air filter, at least to some extent, and...

Page number buttons got moved by ads. I've also seen the little blue expandable ad in a post's text. At least a standard site layout should be maintained with specific areas dedicated to ads. Google coming in and doing whatever they want wherever they want is too much.

It initially looked to me like the hole the rope goes through was part of the starter cover, and I couldn't think how that was supposed to work. It makes sense now.

Looks like Helicoil brand makes every size except M14 X 1.25 from what I can find. Lots of other brands

4 ads in a row above the reply box

Looks like servicing could be more of a challenge than normal?

That's what I'm thinking, I just didn't know if 261's had some defect causing it. I just fixed another saw that was victim to botched basic maintenance.

I was afraid the site finally got sold to whoever owns AS now. If I was supreme secret puppet master of the USA I'd ban ads, and make people have to browse a phone book-like catalog of businesses if they want to shop for services and things they don't or do need.

Even when looking at pictures!

How does the starter work?

Great info, thanks. This is my first time working on a 261. What's up with the plastic part blocking the spark plug, and the rubber in the hole that keeps a wrench from reaching the plug? Am I missing something, or did Stihl go full retard on that? A 291 at least has a big enough hole for the...

I have two 261's (a 2018 and 2023) that have stripped the spark plug out of the cylinder. Is this common? Will the Stihler fix it for free under some kind of extended warranty recall? What's the best way to fix, what is your preferred helicoil?

Looks like the ads got kicked up a notch. All that's left now are some popup videos.

Makes sense, but it's probably more so the silt passing by them.

Is oil abrasive to engines? Like how water makes river rocks smooth?

The higher zinc may simply be dues to the higher calcium, since the detergent supposedly competes with anti wear additives such that, an increase of one requires an increase of the other to work properly. Here's a question only science can answer while we just theorize: Does a catch can shorten...

Probably some reaction with the fuel, since it's not a problem in diesels, because they ignite as soon as the fuel comes out of the injector, according to my understanding of diesels. More calcium must be good or they wouldn't still make diesel oil that way.

Supposedly the increased calcium (detergent) content in diesel oil can increase the likeliness of pre-ignition in direct injection turbo gas engines. I have no idea how, but apparently when pre ignition occurs around the piston rings, there's enough force to break the piston.

Looks like there's some do's and don't to keep in mind. You could make your own easily enough, and it looks like one with a large paper filter will do the best job catching the oil vapor.

I'm guessing if the coating is intentional, it is to help it cool better. Dark surfaces radiate heat better.