You'll primarily need an Allen wrench (often 1/4 inch or 1/8 inch, usually supplied with the disposal) to manually turn the motor shaft if it's jammed. A flashlight can also be very helpful for visibility inside the drain. The 'Wrench' listed as required likely refers to this specialized Allen wrench.

Always disconnect power to the garbage disposal at the circuit breaker first and verify it's off. This prevents accidental activation while your hands or tools are near the blades, which could cause severe injury. Never attempt to work on the unit with the power still connected.

If the reset button doesn't resolve the issue, the next step is usually to manually clear any blockages. Use an Allen wrench in the center hole at the bottom of the disposal to rotate the motor shaft back and forth until it moves freely. This often frees the impellers from jammed food particles.

For a beginner, this troubleshooting process typically takes 15-30 minutes, assuming the problem is a common jam or tripped reset. Most of the time is spent ensuring safety, locating components, and systematically checking each step. If it takes longer, it might indicate a more complex issue.