Kohler 27121-4-SN Guide D'installation page 9

6. Install Handles
NOTE: Lever handles should be parallel to the bath rim when the
handles are in the OFF position. The handles should point toward
the bath when in the ON position.
Align a handle assembly onto the collar. Secure the handle
assembly with the setscrew.
Repeat for the second handle.
Open and close the handles to confirm alignment and
unobstructed operation.
Kohler Co. 9 1347030-2-A