SF111R not starting

[StarTech]

Stihl only sells the cylinder with the valve seats installed.

PN 4180 020 1209 Cylinder
PN 4180 007 1036 Gasket Set
PN 4180 030 1800 Cam Wheel

But first see if you can clean them up with fine valve grinding compound via a valve job procedure. They may just be carbon up. But sometimes they are too damage to clean up.

 

[StarTech]

Stihl only sells the cylinder with the valve seats installed.

PN 4180 020 1209 Cylinder
PN 4180 007 1036 Gasket Set
PN 4180 030 1800 Cam Wheel

But first see if you can clean them up with fine valve grinding compound via a valve job procedure. They may just be carbon up. But sometimes they are too damage to clean up.

 

[ueww40]

I was afraid of that. I don't see the seats in the parts list. Just for the hell of it I will call Wilson-Dismukes (Stihl headquarters who happen to be in town) and talk to one of the techs. I know they probably can easily replace the seats if they wanted to. Otherwise I will give it a shot rebuffing the seats. It doesn't make it any easier that they are so far up in the cylinder and not easy to get to. I am surprised that no enterpreneur has picked up on that and makes them and provides that service to replace them.