Was on my deck a few days ago and heard my neighbor struggling to start his trimmer. After a few minutes I went over and he said he’s had trouble starting it lately even though he bought it new last season. He said the gas was fresh but who knows. After a few more pulls it started but when he started trimming, I noticed he would continually pull and release the throttle trigger in quick succession never allowing the motor to fully rev. Is it possible that running the motor like this is causing his trimmer to have those hard start issues?