I have heard that you remove the spark arrestor your Stihl weedeater will start easier. Any downside with doing this?
I agree, it isn't likely that will help unless you can see that it is plugged up with carbon.
Good oil mixed properly and some sort of ethanol stabilizer and make sure the carb and intake air filter are clean is your best bet for easy starts. Does your model recommend higher octane than 87 ?
I use premium ethanol free gas with stihl premium oil. It's just a devil to start with the spark arrestor in. Will crank of first pull without spark arrestor. Go figure!