All I can say is that I have the same problem with the same string trimmer. I've been looking all over the web to find an answer, but it's not encouraging, Loretta. A couple of comments on the Wal-Mart site (some people had the patience, or the frustration level tolerance to really finish the third-degree questionaire that Wal-Mart requires to post a comment on their website, though I didn't) said that this is about the worst product they ever had to deal with, and returned it after only a couple hours.
Paul G.
May 2009