Disposal runs but vibrates excessively and causes the sink or countertop to shake.

Safety First: Disconnect power before touching the unit or mount. Do not hold the unit while it is running.

• Step 1 – Check for foreign objects: With power OFF, inspect the chamber and remove any large items that could cause imbalance.
• Step 2 – Inspect impellers: Ensure both impeller lugs are present and pivot similarly. A missing or seized impeller can cause imbalance.
• Step 3 – Verify mounting tightness: From below, check that the mounting ring on the AmazonCommercial unit is fully locked and the three mounting screws are evenly tightened.
• Step 4 – Check sink flange alignment: Look from above to ensure the flange is centered in the drain opening and not tilted.
• If vibration persists: The grind plate may be bent from impact. In that case, replacement of the disposal is recommended, as internal balancing is not adjustable.