i have a eureka the boss and i am getting a weird noise figured bag was full needed to change it so i did. Noise persisted so i checked make sure nothing was caught in the brushes. I even checked the belt it was fine replaced with a new one.Still the noise is there help me I am out of what else to check.
Check to make sure that the hose and the inlet down by the brush roll are open and not clogged. It could be a bad bearing in the motor, if so, you are looking at replacing the motor.
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