> He came out and said there was something wrong with the way it idled and that he wouldn't
> sell it to me!
Not a bad dealer to have.
FWIW: Whenever I have bought a saw local, even when my Stihl dealer sold Huskies, they would assemble them, fire them up a few times, and test run it before handing the saw over.
You know, now that you mention it, I think I remember that happening to me too. He started a saw, didn't like the way it idled, went and got another one while I waited.
So, I wouldn't say it was unusual for a tech to start a saw, not quite like how it runs, then put it down and pick another for a customer or decide to order another one.
I have done the same sort of thing selling cars. It does not mean the original pick was bad, just something didn't feel right and it needed looking at. So, I would sell a different car and take the original home on a demo/test ride to be sure.