Kohler K-6284 Guide D'installation Et D'entretien page 10

Adjust the Carriage Height (cont.)
If applicable, confirm the gasket on the elbow stays correctly
positioned as it enters the toilet drain pipe.
Adjust the carriage until the desired height is reached. Securely
tighten the nuts using the provided hex wrench to secure the legs
in place.
If a cast iron elbow is required, make the connections following all
applicable codes.
1142998-2-D 10 Kohler Co.