I love auto tunes ! I hate tuning saws . Knock on wood . I have never had to take a auto tune to the dealer or do a field reset . IMO auto tunes need to be ran hard . Let them warm up properly and then run the piss out of them . I like to cut wood not tuning chainsaws .
I much prefer tuning my own saws, it only takes a few seconds if you know what you're doing, and it's not like you tuning every few minutes. I would say going down to a dealer to have a saw hooked up, would take more time than it would turning the saw once everyday for a year. And that's considering you even have a competent dealer nearby, and they don't charge you, and if they have the time to do it on the spot.
Now don't get me wrong I like the concept all in all, and just cutting without ever messing around is attractive, most professionals don't like to mess around and many don't even know how to tune a carburetor. It's just at this poit there have been lingering hiccups.
Out of the forty or so AT and Mtronic saws I've owned, ran and ported, for me only three models of them consistently tuned themselves to my liking. The 576, 572 and the fuel injected 500i, and one could argue the 500i is too rich without plenty of load, but that's reall just how Stihl limits the light load RPM.
The 562, and Mark-1 550 were a total mess. The 441 would constantly hunt for tune under load, the early 661 was a mess as well, they now are real good, close to perfect, but the early ones left a bad taste with some. The 462's have overall been very good, they can occasionally miss a beat when warm starting, but that's few and far between. 261 had the solenoid issues most Mtronic models did, and I find them to still run a little rich at idle, better rich than lean like the 550.
When it comes to the 592, I simply don't have enough trigger time on the saw to pass my full judgment, but so far the only complaint is it bounces hard on the limiter, it starts very easy cold, warm or hot, and accelerates lightning fast. It's also a sample size of one. [emoji3577]
