Kohler Composed K-T73087-4-CP Installation Instructions Manual page 15

Adjust the Maximum Water Temperature (Optional)
Remove the setscrew plug.
Loosen, but do not remove, the setscrew in order to remove the handle.
Adjust the indexer to change the maximum water temperature.
Turn ON the water and rotate the valve stem to full hot to verify the new
maximum water temperature.
Reinstall the handle.
Tighten the setscrew and reinstall the setscrew plug.
Kohler Co. 15
1443292-2-B