Unit was simple to prepare for use. Started with no problem, now will it work when needed... Observation: Set up instructions states to place unit on its side, engine side down; however, there is no way to tell where the engine is while the unit is still in the box. Hint - place the box on its edge with the gas filler to the top and slide the unit out. The wheel mount will be on the bottom making it easy to pivot to the wheel once the wheel is installed.