So I got a Husqvarna k960 second hand from an auction. It didn’t run but compression felt ok so I thought I would take a chance on it. So I pulled the muffler every thing looked ok ish. You could see where there was a bit of a hot spot but the rings were ok. So I thought that’s try it. Well I primed it any it started, made a horrible sound then stopped. Would no longer make a full rotation. Anyway long story short I found these rattling around in the air filter wich I did have off but I didn’t notice anything until I picked it up again