Kohler K-8002 Guide D'installation page 6

Leak Shield
6. Install the Waterway
Insert the escutcheon into the rough opening. The double ribs of
the leak shield should be facing up.
If the leak shield makes contact with the elbow: Enlarge the
hole in the back of the leak shield to 1-1/4" (3.2 cm).
Thread the adapter onto the nipple using the provided 11 mm bit,
11 mm or 7/16" socket, extension and socket wrench. Use
masking tape to hold the bit in place, as the bit could fall off and
cause damage.
IMPORTANT! The escutcheon should sit loosely at this point. If it is
tight against the wall, use a longer pipe nipple.
Align the groove in the waterway with the double ribs on the
leak shield.
Press the waterway into place over the adapter. Secure the
waterway to the adapter with the screw provided.
Verify that the escutcheon does not turn or shift.
IMPORTANT! If the escutcheon is still loose after this step, use a
shorter pipe nipple.
1043851-2-D
Escutcheon
Socket Wrench
With Bit
6
Adapter
Extension
Waterway
Screw
Kohler Co.