Chainsaw Repair

Guy said it just quit running and wouldnt start back up. When it was hot or even when it was cold the next day.
I dumped his mix, put mine in started.  Then checked plug and was some small trimmer plug and was missing alot. So replaced. Put my old school spark checker and then my new spark tester and came back fine.  Put his mix in tested and tuned carb.  Call it good. Like the easy ones trouble shooting.  Now to see if it does it again with heavy use to get it hot and see if it was the coil or was it that plug.   Going with plug myself.