Husqvarna T 4000 Owner's/Operator's Manual page 9

The dust extractors are designed and manufactured for severe environments and tasks, but the user must note that the
machine must be protected from knocks and blows. Filter, seals, attachments, and connections are carefully adapted and
selected with regard to the operator's work environment. Therefore, the operator and service personnel must treat the
machine with care in order for it to work correctly for many years.
SAVE THESE INSTRUCTIONS!