Hi Bob, Thank you for your question!
Here are the steps to adjust the rotational limit stop in a 17 Series faucet. First, remove the temperature control knob cover. You should able to "pop" it off of the temperature control knob by prying it off with a small screwdriver. Next, you will see a gray plastic insert with a Phillips screw in the middle. Removed the screw and pull off the gray plastic item.
You should now be able to see the rotational limit stop, which resembles a black plastic gear. If the water temperature is above 120 degrees F, remove the rotational limit stop, rotate it clockwise one tooth for every 2 degrees of temperature change desired, and reinstall it. If the water is cooler than desired, remove the rotational limit stop and rotate it counterclockwise one tooth for every 2 degrees of temperature change desired. Replace the temperature control knob, turn the faucet off and back on, and re-check the temperature. Repeat as necessary until the desired water temperature has been achieved.
The rotational limit stop may need to be adjusted if the inlet water temperature changes. For instance, during the winter, the cold water temperature is colder than it is during the summer, which could result in varying outlet temperatures.
These instructions are included with the Maintenance and Installation guide that originally came with this faucet.