Vacuum emits a squealing noise from the floor head when the brushroll is spinning.

Safety first: Remove the battery and detach the floor head.

• Step 1 – Remove brushroll: Take out the brushroll and remove end caps (if removable).
• Step 2 – Clean bearings: Remove hair and dust from the bearing area.
• Step 3 – Light lubrication (if allowed): Apply a tiny drop of light machine oil to the bearing shaft, avoiding plastic parts. Not all models support lubrication; check the manual.

If squealing continues or the bearings feel rough, replace the brushroll assembly.