Kohler K-2590 Guide D'installation page 7

Nut
Washer
5. Install the Locks
If present, remove the cover from the tank. Set the cover upside
down on a protected surface.
From the inside of the tank, insert a washer followed by a nut
into the hole located on the side of the tank.
From the outside of the tank, insert a locknut into the hole and
through the nut.
CAUTION: Risk of product damage Do not overtighten the
locknut.
Using a 5/8" wrench, tighten the locknut. Do not overtighten the
locknut.
Repeat the above procedures for the other side of the tank.
Attach a hook to each side of the cover as shown.
Place the cover on the tank.
Insert a locking bolt into each locknut.
Using the locking tool (provided), tighten the locking bolts.
Lift up on the cover to verify the cover is properly locked. Adjust
the cover lock components, if necessary.
Kohler Co.
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Hook
Locknut
Locking Tool
7
Locking Bolt
1267569-2-A