How can I fix the 2861 blower tool for HMC Green Machine 3000M power unit?

I have a HMC Green Machine 3000M series power unit with a blower tool, model 2861, in need of repair. I think the blower tool bearings or bushings are worn out. It vibrates excessively. The power unit and other attachments work fine. I need to repair or replace the blower tool attachment. Please help!