Without a reliable string trimmer, it’s hard to keep the edges of a lawn neat and maintained. Lawnmowers have a hard time cutting right to the edges of landscaping features like paths and flower beds without doing damage. That’s where the string trimmer comes in. Yet this handy yard tool can only perform as expected with maintenance performed at least once a year. Tuning the trimmer up right before using it for the first time is generally the easiest practice to remember. Here’s what to do with a string trimmer that hasn’t been used since last fall.