Disposal leaks from the side discharge elbow where it connects to the drain pipe.

Safety first: Turn OFF power to the disposal. Place a bucket or towel under the drain piping.

• Tighten connections: Hand-tighten the slip nut connecting the American Standard discharge elbow to the drain trap. Use channel-lock pliers for a slight additional snug, but do not overtighten.
• Inspect gasket: If leaking persists, disconnect the elbow from the disposal outlet and inspect the rubber gasket. Replace if flattened, cracked, or missing.
• Check for cracks: Examine the PVC or metal tailpiece and elbow for hairline cracks. Replace any damaged sections.
• Reassemble and align: Reinstall the elbow, ensuring it is straight and not under stress from misaligned piping.
• Test: Run water with the disposal off and then on, watching for leaks at all joints.