Hi All, I've just bought an Entec Treebusta and was hoping someone could help me out with a few questions?

1) Where can I get a manual?
2) Do they have a serial/model number and where is it? I have found the engine details (Kohler) but thought the chipper might have it's own?
3)It's very loud! Even when not chipping. Is this normal or do I have an exhaust problem?

Thanks in advance, Darren