The device works well, is a little difficult but manageable. After the first use I shut the machine upright and determined before the second use, that the handle was completely oiled by oil spills. I complaining of post got a new device. Even with the new device, the handle was oiled up again after use and store it. I have to keep it now and yet not complained again. Must specify the handle bar properly wipe before use. My garden neighbor has a similar device from another manufacturer and the same problem.