I bought a Stihl blower, after 3 or 4 uses it became more difficult to start. I used exact oil mixture and made sure not to choke too long.
After a few more uses it would not start at all. I took it to an “authorized” service center for service. After I brought it home it would not start once.
These products are awful - I will never purchase any Stihl product. I would be willing to pay twice as much for a reliable machine, as it is worth avoiding the frustration.