We owned this lawnmower for roughly six months before we threw it out with the garbage. My husband and I own a 5.5 acre yard with our home. It is in Pennsylvania, so the terrain tends to be hilly. Our yard is not especially steep but is sloped in areas. We also have about a dozen large mature oak and maple trees in the yard, which do have extensive root systems which frequently protrude out of the yard. We bought this lawn mower to do trim and touch up work for the yard, as well as the primary mower on occasion to mow our front yard, which is level and about one acre. However, this mower just cannot handle anything that is not level. Any stick bigger than about a quarter inch in diameter is too much for it to handle/mulch. The shear pin would fail constantly (about four times in a season before we said enough is enough). The vibration in the mower tended to be quite high - my hands would ache after about twenty minutes of use. It was not especially difficult to start - I could usually do it in about two pulls (I am a young woman, but in better than average shape). Bottom line, this mower may be a good candidate for level, small suburban lawns that are less than half an acre but cannot handle anything more rigorous than that. We were very disappointed and will never buy this brand again.