Pump runs but makes a loud grinding or screeching noise.

Safety first: Turn off and unplug the pump before inspection.

• Isolate the source: Remove the pump lid and basket, then briefly run the pump for a second (if safe and water‑primed) to localize the noise. Immediately turn it off.
• Check for debris: Inspect the impeller area for stones, screws, or plastic pieces rubbing against the impeller. Remove any foreign objects.
• Assess bearing noise: If the noise is a high‑pitched screech or rumble from the motor body, the bearings are likely worn.
• Repair plan: Bearing replacement on sealed Bestway motors is typically not user‑serviceable; replacing the motor or complete pump assembly is usually recommended.