A Stihl saw, was bought because my old Stihl "farmboss" died and couldn't get a replacement electronic ignition anywhere. I had around 20 years service out that machine, started most times first pull.
New one lasted a couple of hours and seized up! Dealer replaced piston, cylinder head and a couple of other things.
Got it home, lasted about an hour, yep seized up again.
Dealer blamed me and said I didn't know how to use a chains saw, one minute he's saying I added too much 2 stroke oil to the mix then contradicts himself saying not enough.
Made a formal complaint to Stihl, they told the dealer to send the damaged parts to them. After a week, we were told to pick the repaired saw up, covered by full warranty.
Yep, you guest it, lasted less than an hour.
It's still in my shop four years later, I bought myself a Husqvarna after that, did have a warranty issue with it, but been operating perfectly ever since.
No more Stihls for me.