Received this unit yesterday and assembled it today. Instructions were adequate, parts were well labeled, and assembly tips spot on. Total time to assemble just over an hour but I did have my spouse remove the blue plastic coverings from various parts as I assembled the unit. I would recommend to use REAL TOOLS not the supplied wrench. A 10mm socket is helpful as is a 10mm driver. After installing the AAA battery (no picture provided to show whether the positive terminal goes in or out) and purging the system of air, the unit started on first try. I'm hoping for long and happy usage.