I have to add that you should have had some TRAINING from the dealer! I copied this from your manual on that machine. "Dealer Responsibility Your distributor from whom you purchased this mobile cleaning unit is responsible for correct installation of this machine. The dealer is also responsible for initial training of your operators and maintenance personnel in proper operation and maintenance of this unit.
I would be scared to death as a new operator trying to go out willy nilly and start using it. That's not a lawn mower or a weed eater! Your dealer needs to be called on the carpet for this. I don't know how much a dealer makes off that sale, but I suspect it's a substantial amount. This is not a toy you sell and say, "See ya later!"