If the solenoid is not the issue, why bother with a non-at carb? Nothing wrong with autotune/m-tronic, especially now after they figured out the proper materials for the solenoids and they actually last (yea, plastic moving parts were *s-word, go figure lol). Its fine tuned and reliable, same with the 500i's injection system (probably even more reliable, I heard literally ZERO issues with the fueling system on these). Looking forward to an update after swapping the carb, fingers crossed
First run of 500is had some issues where they would randomly lean themselves out to the point of siezing.... had 3 of them theu the shop for the same thing, got the rep in to look at em, and he said...yeah... we have seen that in the early run saws... put a new computer module and jug and slug in it and it will be good....
Interesting, didn't hear about it in forestry crews here, and they started using them in 2019. When were your problematic ones acquired? Mine has fabrication date of 10.2019, it always seems to run rich enough, richer than the auto-tune/m-tronics at least by the sound of it, as did all the 500i's I used.
I couldnt tell you, i work in a stihl shop and have seen them come thru from other folks... can just tell you that i put em back together, and thry havent been back since....LOL you wouldnt catch me owning a 500 unless it was given to me for free.... and even then i would likely trade it for an ms462 or ms661.... i am not a fan of them, theres too much stuff that has the potential to go wrong in my mind...
