So I take the string trimmer from my daughter, and look it over. I don't see anything out of order (you know how kids are) so I start it up. As I'm moving the choke lever to the run position my finger brushes the insulated rubber spark plug wire. The next thing that I know I'm doing a River Dance trying to let go of the trimmer. Holy Cow those things pack a wallup! After the smoke clears I find a small slit in the insulation on the wire. I guess I damaged it somewhere. My daughter gives me a well deserved "I told you so" look. Next time I'll listen . . . . .