Maxmatic Loose or Damaged Cleanout Plug Seal

Garbage disposal runs but water leaks from the removable cleanout or access plug (if equipped).

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Possible Causes

Loose cleanout cap, Cracked O-ring or gasket, Cross-threaded plug, Debris on sealing surface

How to Fix / Troubleshooting

Safety first: Turn off power and do not operate the disposal while it is leaking.

  • Locate the cleanout: Identify the cleanout or access plug on the side or bottom of the Maxmatic unit.
  • Tighten the plug: Use the appropriate tool to snug the plug, being careful not to overtighten and crack the housing.
  • Inspect the seal: Remove the plug and check the O-ring or gasket for cracks or flattening. Clean the mating surfaces and replace the seal if damaged.
  • Reinstall and test: Reinstall the plug carefully, ensuring it is not cross-threaded. Run water to confirm the leak is resolved.

If the housing threads are damaged and cannot seal, replacement of the Maxmatic disposal may be necessary.

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Repair Difficulty

Easy 2/5

Required Part

Maxmatic Cleanout Plug Gasket
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