Trim a little. Trim a lot. Trim the brush as well with the brush cutter head. This Troy-Bilt grass trimmer features a 4-cycle, 29cc engine, so you can just add straight gas and go! The big 18" cutting path will also trim down the time it takes to get the job done. Spring Assist makes it easy to pull-start, or you can opt for an electric start with an optional adapter.