# Performing a Zero Adjustment

A zero adjustment is required in the following situations:

- After turning on the MTRwrench 85.

- After a minor overload of the transducer.

To perform a zero adjustment, proceed as follows:

1. Place the MTRwrench 85 into the cradle.

   Release the wrench and do not touch it again until the zero adjustment is complete.

2. During the zero adjustment, the Progress LEDs turn on and off in sequence as shown in the picture below:

   A | Top view of the wrench inside the cradle. | B | Representation of the Progress LEDs behavior during the zero adjustment.

If the zero adjustment is successful, the Progress LEDs turn off.

Relevant Information

- Errors and Warnings LED Indicators
- Zero Adjustment LED Indicators