Newly installed Everbilt garbage disposal causes dishwasher to back up into sink

Safety first: Turn OFF power to the disposal and dishwasher at the breaker. Do not run either appliance until corrected.

• Check knockout plug:
  • Disconnect the dishwasher drain hose from the Everbilt disposal inlet.
  • Shine a flashlight into the inlet. If you see a solid plastic wall, the knockout plug was not removed.
  • Use a screwdriver and hammer to gently knock out the plug from inside the inlet, then retrieve the loose plug from the grinding chamber with tongs.
• Verify hose routing: Ensure the dishwasher drain hose has a high loop under the countertop or is connected to an air gap before entering the disposal. This prevents backflow.
• Reconnect and clamp: Reattach the hose to the dishwasher inlet and tighten the clamp securely.
• Test: Restore power and run a short dishwasher drain cycle to confirm proper flow.