i wanted to say that a few years ago i needed a trimmer. this relative of mine was moving and had this trimmer. only used one tank full of gas in it................... bought it for $25. ran like a dream and still does. it is a curved shaft light weight model. i opened up the muffler a little and it'll go through 2 feet of thick grass like nothing. i just wanted to know about how reliable these things are normally, mine starts on the second pull every time. i also was wondering on how to get more power out of it because i'm a four cycle engine person not a 2. the muffler had a really tiny 1 cm hole and i opened it up to an inch that helped.