If your garbage disposal hums but doesn’t grind, the motor is likely jammed. Most modern disposals come with a specialized anti-jam wrench designed to free the internal flywheel. Knowing where to locate this simple tool can save you from expensive service calls.

The anti-jam wrench is typically stored in one of three places. First, check inside the disposal’s splash guard or rubber baffle. Some manufacturers include a small hex key (often 1/4-inch) that clips into a recessed slot inside the baffle. Second, look in the cabinet directly under the sink. Many homeowners keep the wrench taped to the drain pipe or tucked inside a small plastic bag near the garbage disposal unit. Third, if you still have the original product box, the wrench is often sealed in a small plastic sleeve alongside the installation manual.

If you cannot find the wrench, do not panic. A standard 1/4-inch hex key (Allen wrench) works perfectly. Simply insert it into the hex-shaped hole located at the bottom center of the garbage disposal motor housing. Turn it clockwise and then counter-clockwise to break the jam free. Always disconnect power before inserting any tool.

Pro tip: store your anti-jam wrench in a magnetic holder stuck to the inside of the sink cabinet door. This keeps it visible and accessible for future jams. Regular monthly use of the wrench—turning it manually even when the disposal is not jammed—will help loosen unseen debris and extend the unit’s life.

Remember: the anti-jam wrench is not a universal tool; some brands use unique shapes such as a circular wrench with two prongs. In that case, check your model manual or search online for “garbage disposal brand name wrench location” for precise guidance. Keeping a backup hex key taped to the pipe behind the P-trap ensures you always have a solution handy.