The stihl does not have any oil! The oil that sells stihl is Castrol oil.
The synthetic stihl oil is Castrol TTS oil and mineral oil which is red, is Castrol mineral oil.
I know more brands than Stihl and Husqvarna, but these are modern stuff bulb. They are one more thing to give problems, so do not use it, have advantage ;)
You want a good chainsaw? esteem the old, because these new, all together are not worth half of the old! and not only are 550s, mine is a 440 and has the same symptoms! beautiful crap that I buy, I could have bought a 265 but as it was older, I preferred this, after I screwed up.
Manufacturing...
Exactly, the guarantee only covers manufacturing defects.
I do not believe that a person at the end of a half-dozen hours can kill a new chain saw! Well, if so, the best thing is to not move in any other chainsaw. But I do not believe this hypothesis.
If you are within the warranty period, the seller will have to forcibly activate the warranty. If the seller refuses, you can make a claim for Stihl in Germany and refer to the disservice and the bad name that the seller is going to the Stihl brand.
Sellers are not just to sell new machines...
Is this piece you are looking for?
http://www.ebay.com/itm/Stihl-MS-261-271-291-Sprocket-For-325-Chain-/111944043984?hash=item1a10628dd0:g:~xYAAOSwFNZWxRce
Same bore, but different stroke.
024 AV/Woodboss, 42cc, stroke 30mm, bore 42mm, introduced 1982.
024 AVS(Super), 44.3cc, stroke 32mm, bore 42mm, introduced 1984.
I found this information in another forum ;)
Good night, my old boss had a 250 or 251 no longer remember well that after having worked and if for any reason stop the engine, then it was a problem back to work. It has been several times to the store where it was purchased for them repair the engine and came always the same, was right from...