Garbage disposal vibrates excessively or shakes the sink during operation

Safety first: Turn OFF power at the breaker before working under the sink.

• Step 1 – Check for foreign objects: With power off, inspect the grinding chamber and remove any large items that could cause imbalance.
• Step 2 – Verify impeller movement: Use a wooden stick to rotate the turntable and ensure both swivel impellers move freely and are not bent.
• Step 3 – Tighten mounting assembly: Under the sink, hold the disposal and check the mounting ring. Tighten the three mounting lugs evenly so the unit is firmly clamped to the sink flange.
• Step 4 – Check sink flange stability: Ensure the sink flange is tight against the sink and not rocking. If loose, remove and reseal with plumber’s putty.
• Step 5 – Test with water running: Restore power, run cold water, and operate the disposal. If severe vibration continues, the internal turntable may be warped and the disposal should be replaced.