I have a small Stihl chainsaw, and a hedge trimmer. Both have given good service, but they are invariably hard to start. Choke, pull 2-3 times, release choke, pull 1-2 times, and then they run fine. I have other two cycle stuff including a Shindaiwa string trimmer and RedMax backpack blower that usually start on the first pull. The Stihl equipmnet must be designed that way, as my tree guys all use Stihl saws, and they say it's the way they are. Wonder why?