I tried all levels and the wheels just do not turn good . So I am not getting to the leaves. Very hard to try to push because the wheels are not turning well on the grass. I am very dissappointed to be losing my money as I do not have the box to return this item.I am a senior on a budget and this is alot of money to lose. Maybe the company would take it back without a box ??? I cannot reach them. update : I do nit want to sound negative .I contacted Amazon and told them the story. They accepted my return. I boxed the item as well as I could,phoned UPS and they picked it up. A small fee that Amazon told me they would refund. And now I will get my credit. I am now very satisfied. By the way,this machine is excellent quality but just not good for me. I would buy Vevor products anytime. I thank Amazon for their help.