so update on the PB-770. It just recently **** the bed on us. Just past the two year warranty mark (conveniently). The service dealer said that the cylinders are marred do to dust getting in. It is really disappointing. If this is a commercial machine it NEEDS to be able to be operated in dusty conditions. We change the air filters regularly and it is ALWAYS stored inside.
My light-duty husky blower has been running mint for the past 6 years and it isn't babied nearly as much as the Echo was. I am very frustrated with Echo and suggest NOBODY buys this.
We just purchased a BR-600 and I will never buy an echo product again.