After reading about the HF 2 cycle generators here, I picked up one last fall during a parking lot sale for $79. Got it out of the shed today and broke it out of the box and swapped out the spark plug as has been suggested. In reading the directions, it mentions grounding the unit, which would obviously impact the portability and convenience of the unit. As I have never owned a portable generator before, are any of you using this unit grounding it?