Hello, welcome aboard!
Stihl put their 'M-Tronic' electronic fuel control system into their large brush saws, oh some 4-5 years ago now. So they are essentially fuel injected rather than using a traditional carb with user adjustable jets.
Also, it is easy to miss in the light grey font, down at the bottom of every post, almost mixed in with users signature file - the date of each post. These were 3 years old now.
I run an FS 560, it was quite an adventure at first. If you have any questions on one of these saws, I could give one a try; have run brush-saws for many years.
Stihl put their 'M-Tronic' electronic fuel control system into their large brush saws, oh some 4-5 years ago now. So they are essentially fuel injected rather than using a traditional carb with user adjustable jets.
Also, it is easy to miss in the light grey font, down at the bottom of every post, almost mixed in with users signature file - the date of each post. These were 3 years old now.
I run an FS 560, it was quite an adventure at first. If you have any questions on one of these saws, I could give one a try; have run brush-saws for many years.